x+5.2-(32+16.3:6-15)=0
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\(\Leftrightarrow\)\(5x+10-25=0\)
\(\Leftrightarrow\)\(5x=15\)
\(\Leftrightarrow\)\(x=\frac{15}{5}=3\)
x+5,2-(32+16.3:16-5)=0
(=)x+5,2-30=0
(=)x+5,2=30
x=24,8
chúc bạn học tốt ^_^
x-6:2-(48-24):2:6=0+3
x-6:2-(48-24):2:6=3
x-6:2-(48-24):2 =3 nhân6
x-6:2-(48-24):2 =18
x-6:2-48-24 =18 nhân 2
x-6:2-48-24 =36
x-6:2-48 =36+24
x-6:2-48 =60
x-6:2 =60+48
x-6:2 =108
x-6 =108:2
x-6 =54
x = 54+6
x =60
a) 460 + 85 * 4 = ( x + 200 ) * 4
460 + 340 = ( x + 200 ) * 4
800 = ( x + 200 ) * 4
x + 200 = 200
x = 0
b) x + 5 * 2 - ( 32 + 16 * 3 : 16 - 15 ) = 0
x + 10 - ( 32 + 3 - 15 ) 0
x + 10 - 20 = 0
x - 10 = 0
x = 10
a) \(460+85.4=\left(x+200\right).4\)
\(\Rightarrow460+340=4x+800\)
\(\Rightarrow-4x=800-460-340\)
\(\Rightarrow-4x=0\)
\(\Rightarrow x=0\)
Vậy x = 0
b) \(x+5.2-\left(32+16.3:16-15\right)=0\)
\(\Rightarrow x+10-\left(32+3-15\right)=0\)
\(\Rightarrow x+10-20=0\)
\(\Rightarrow x-10=0\)
\(\Rightarrow x=10\)
Vậy x = 10
2X.(32+16.13:16-15)-5.2^3=0
(=)2X.(32+13-15)-5.8=0
(=) 2X.30-40=0
(=) 2X.30=40
(=) 2X=10
(=) X=5
Tìm x εIN biết
a) 390 - (x-8) = 168:13
b) (x-140) : 7 = 27 - 24
c) x- 6 :2 - ( 48 - 24 ) :2 :6 - 3 = 0
d) x+5.2-(32+16.3:6-15)=0
b) \(\left(x-140\right):7=27-24\)
\(\left(x-140\right):7=3\)
\(x-140=21\)
\(x=161\)
vay \(x=161\)
c) \(x-6:2-\left(48-24\right):2:6-3=0\)
\(x-3-24:2:6-3=0\)
\(x-3-2-3=0\)
\(x-8=0\)
\(x=8\)
vay \(x=8\)
d) \(x+5.2-\left(32+16.3:6-15\right)=0\)
\(x+10-\left(32+8-15\right)=0\)
\(x+10-25=0\)
\(x-15=0\)
\(x=15\)
vay \(x=15\)
a) \(390-\left(x-8\right)=168:13\)
\(390-x+8=\frac{168}{13}\)
\(x+8=390-\frac{168}{13}\)
\(x+8=\frac{5070}{13}-\frac{168}{13}\)
\(x+8=\frac{4902}{13}\)
\(x=\frac{4902}{13}-8\)
\(x=\frac{4798}{13}\)
vay \(x=\frac{4798}{13}\)
x + 10 - (32 + 48 : 6 - 15) = 0
x + 10 - (32 + 8 - 15) = 0
x + 10 - 25 = 0
x = 0 + 25 - 10
x =15
bay gio mk ranh rui mk lam cho
x+5.2-(32+16.3:6-15)=0
x+5.2-(32+48:6-15) =0
x+5.2-(32+6-15) =0
x+5.2-(38-15) =0
x+5.2-23 =0
x+10-23 =0
x+10 =0+23
x+10 =23
x=23-10
x=13
chuc bn hoc gioi!