x - 100 + 10 = 1000
x - 100 = 1000 + 10
x - 100 = 1010
x = 1010 - 100
x = 910
ai nhanh mik k
x - 100 + 10 = 1000
x - 100 = 1000 - 10
x - 100 = 990
x = 990 + 100
x = 1090
x-100+10=1000
x-100=1000-10
x-100=990
x= 990+100
x= 1090
tk nhé
x - 100 + 10 = 1000
x - 100 = 1000 - 10
x - 100 = 990
x = 990 + 100
x = 1090
k
x - 100 + 10 = 1000
x - 100 = 1000 + 10
x - 100 = 1010
x = 1010 - 100
x = 910