TÌm x biết rằng :
a/ 6.x - 37 = 1818 : 18 b/ x : 23 + 45 = 270
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a/ 1818 : (6x - 37) = 18
6x- 37 = 101
6x = 138
x= 23
b/ (x : 23 + 45) . 67 = 8911
x : 23 + 45 = 133
x: 23 = 88
x = 2024
a) ( x + 216 ) : 61 + 1 = 202
( x + 216 ) : 61 = 201
( x + 216 ) = 12261
x = 12045
b) 1818 : ( 6x - 37 ) + 1 = 19
1818 : ( 6x - 37 ) = 18
( 6x - 37 ) = 101
6x = 138
x = 23
c) ( x : 23 + 45 ) x 67 + 3 = 8914
( x : 23 + 45 ) x 67 = 8911
x : 23 + 45 = 133
x : 23 = 88
x = 2024
(x + 216) : 61 + 1 = 202
=> (x + 216) : 61 = 201
=> x + 216 = 12261
=> x = 12045
vậy_
1818 : (6x - 37) + 1 = 19
=> 1818 : (6x - 37) = 18
=> 6x - 37 = 101
=> 6x = 138
=> x = 23
vậy_
(x : 23 + 45) x 67 + 3 = 8914
=> (x : 23 + 45) x 67 = 8911
=> x : 23 + 45 = 133
=>x : 23 = 88
=> x = 2024
vậy_
a ) x = 2 45 − 1 9 = − 1 15 ; b ) x = − 3 7 − 4 5 − − 2 3 = − 59 105
a ) x = 1 9 + 5 7 = 52 63 b ) x = 2 15 − 3 10 = − 1 6
c ) x = 2 45 − 1 9 = − 1 15 ; d ) x = − 3 7 − 4 5 − − 2 3 = − 59 105
1)\(x-105:21=15\)
\(x-5=15\)
\(x=15+5\)
\(x=20\)
Vậy \(x=20.\)
2)\(\left(x-105\right):21=15\)
\(\left(x-105\right)=15.21\)
\(x-105=315\)
\(x=315+105\)
\(x=420\)
Vậy \(x=412.\)
4)\(1818:\left(6x-37\right)=18\)
\(6x-37=1818:18\)
\(6x-37=101\)
\(6x=101+37\)
\(6x=138\)
\(x=138:6\)
\(x=23\)
Vậy \(x=23.\)
x × 23 - x × 5 = 1818
x × (23 - 5) = 1818
x × 18 = 1818
x = 1818 : 18
x = 101
6.x - 37 = 1818 : 18 x : 23 + 45 = 270
6.x - 37 = 101 x : 23 = 270 - 45
6.x = 101 + 37 x : 23 = 225
6.x = 138 x = 225 x 23
x = 138 : 6 x = 5175
x = 23
a) \(6x-37=1818:18\)
\(\Rightarrow6x-37=101\)
\(\Rightarrow6x=101+37\)
\(\Rightarrow6x=138\)
\(\Rightarrow x=138:6=23\)
b) \(x:23+45=270\)
\(x:23=270-45\)
\(x:23=225\)
\(x=225\cdot23\)
\(x=5175\)