568-(2x+14)=400
2x+14=568-400
2x+14=168
2x=168-14
2x=154
x=154:2
x=77
bn hok tốt
x = 77 nha bn
k giùm mk nha các bn
>_< học tốt
568-(2.x+14)=400
2.x+14=568-400
2.x+14=168
2.x =168-14
2.x =154
x =154:2
x =77
568-(2.x+14)=400 2.x+14=568-400 2.x+14=168 2.x =168-14 2..x =154 x =154:2 x =77