x+500=500-200
x+500=300
x=300-500
x=-200
x + 500 = 500 - 200
x + 500 = 300
x = 300 - 500
x = -200
x + 500 = 500 - 200
x + 500 = 300
x = 500 - 300
x = 200
Ai k mk
mk k lại
x + 500 = 500 - 200
x + 500 = 300
x = 300 - 500
x = - 200
x + 500 = 500 - 200
x + 500 = 300
x = 500 - 300
x = 200
Ai k mk
mk k lại
x + 500 = 500 - 200
x + 500 = 300
x = 300 - 500
x = -200
x + 500 = 500 - 200
x + 500 = 300
x = 300 - 500
x = -200
tk cho mk
x + 500 = 500 - 200
x + 500 = 300
x = -200
ai tk mk, mk tk lại.
x + 500 = 500 - 200
x + 500 = 300
x = 300 - 500
x = -200
tk mk nhaaaaa
x + 500 = 500 - 200
x + 500 = 300
x = 300 - 500
x = - 200
K mk nha