x-200=600-400
x -200=200
x =200+200
x =400
vậy x bằng 400
x - 200 = 600 - 400
x - 200 = 600 - 400
x - 200 = 200
x = 200+200
x = 400
x-200=600-400
x-200=200
x=200+200
x=400
k mình na...^_^...kết bn nữa na...thanks♥
x - 200 = 600 - 400
x - 200 = 200
x = 200 + 200
x = 400
Vậy x = 400
x-200=600-400
x-200=200
x=200+200
x=400
x - 200 = 600 - 400
x - 200 = 200
x = 200 + 200
x = 400
x- 200 = 600 - 400
=> x- 200 = 200
=> x= 400
đáp số x = 400
x - 200 bang 600 - 400
x - 200 bang 200
x bang 200+200
x bang 400
