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\(\left(35-x\right)-70=-45\)
\(\Rightarrow35-x=-45+70\)
\(\Rightarrow35-x=25\)
\(\Rightarrow x=35-25\)
\(\Rightarrow x=10\)
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= 154 . 235 + 154 . (-35)
= 154 . [ 235 + (-35)]
= 154 . 200
= 30800
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70 - 5 . ( 2.x - 3 ) = 45
5( 2x -3 ) = 70 - 45
5( 2x-3 ) = 25
2x-3 = 5
2x = 8
x = 4
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35%x - 70%=-65%x
35%x-(-65%x)=70%
35%x+65%x=70%
100%x=70%
x=70%
Vậy x=70%
Mọi người tk cho mình nhé. Mình cảm ơn nhiều ^-^
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[ ( 6 . x - 27 ) : 2 - 84 ] . 28 = 5628
[ ( 6 . x - 27 ) : 2 - 84 ] = 5628 : 28
( 6 . x - 27 ) : 2 - 84 = 201
( 6 . x - 27 ) : 2 = 201 + 84
( 6 . x - 27 ) : 2 = 285
( 6 . x - 27 ) = 285 . 2
6 . x - 27 = 570
6 . x = 570 + 27
6 . x = 597
x = 597 : 6
x = 99,5
[(6 . x - 27 ) : 2 - 84 ] . 28 = 5628
[( 6 . x - 27 ) : 2 - 84 ] = 5628 : 28
[( 6 . x - 27 ) : 2 - 84 ] = 201
( 6 . x - 27 ) : 2 = 201 + 84
( 6 . x - 27 ) : 2 = 285
( 6 . x - 27 ) = 285 x 2
(6 . x - 27 ) = 570
6 . x = 570 + 27
6 . x = 597
=> x = 597 : 6 = 99,5