200-16x-56=112
<=>200-16x=112+56
<=>200-16x=168
<=>16x=200-168
<=>16x=32
<=>2
vậy x=2
k mk nhe bạn
200- 8(2x+7)=112
=> 8(2x+7)=200-112
=>8(2x+7)=88
=>2x+7=88:8
=>2x+7=11
=>2x=11-7
=>2x=4
=>x=4:2
=>x=2
200-8(2x+7) =112
8 .( 2x + 7 ) = 200 - 112
8 . (2x + 7 ) = 88
2x + 7 = 88 : 8
2x + 7 = 11
2x = 11- 7
2x = 4
x = 4 : 2
x = 2
k mình nha
200-8.(2x+7)=112
8.(2x+7)=200-112
8.(2x+7)=88
(2x+7)=88:8
(2x+7)=11
2x =11-7
2x =4
