x + 100 = 200 - 10
x + 100 = 190
x = 190 - 100
x = 90
x + 100 = 200 - 10
x + 100 = 190
x = 190 - 100
x = 90
ai tk mk mk tk lại
x + 100 = 200 - 10
x + 100 = 190
x = 190 - 100
x = 90
x+100=200-10
x+100=190
x=190-100
x=90
k mik nha
x + 100 = 200 - 10
x + 100 = 190
x = 190 - 100
x = 90
x+100=200-10
x+100=190
x = 190-100
x = 90