X+78x X+25xX-Xx4=78.6=121.4
K
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19 tháng 2 2019
Ui bài khó quá mk ko làm đc xl nhé.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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19 tháng 2 2019
X:0,1+X:0,25+X:0,5+X×4
⇒ x :0,1+ x :0,25+ X:0,5+x:0,25=2018
⇒ X:(0,1+0,25+0,5+0,25)=2018
⇒ X:1,1=2018
⇒ x=2018 x1,1=2219,8
Vậy X=2219,8
28 tháng 4 2016
X : 0,25 + X:0,5-Xx4 =50,28
X x 4 + X x 2 - X x 4 = 50,28
X x 6 - X x 4 = 50,28
X x 2 = 50,28
X = 50,28 : 2 = 25,14
**** mik nha m.n !!!!
LB
17 tháng 12 2016
( X x 2 + 3 + 4 + 1 ) = 2130
X x 10 = 2130
X = 2130 : 10
X = 213
IL
17 tháng 12 2016
Xx2+Xx3+Xx4+X=2130
Xx(2+3+4+1) =2130
Xx10 =2130
X =2130:10
X =213
10 tháng 6 2015
X x 4 - 2 = 22
X x 4 = 22 + 2
X x 4 = 24
X = 24 : 4
X = 6
đúng nha !
J
0
LB
0
NH
22 tháng 2 2022
120-(Xx3+Xx4)=50
Xx3+Xx4 =120-50
Xx(3+4) =70
Xx7 =70
X =70:7
X =10
=......ban tu lam