x + 99 = 99 + 100 + 101
x + 99 = 199 + 101
x + 99 = 300
x = 300 - 99
x = 201.
x + 99 = 99 + 100 + 101
x + 99 = 199 + 101
x + 99 = 300
x = 300 - 99
x = 201
Vậy x = 201
x + 99 = 99 + 100 + 101
x + 99 = 300
x = 300 - 99
x = 201
x + 99 = 99 + 100 + 101
x + 99 = 199 + 101
x + 99 = 300
x = 300 - 99
x = 201
ai tk mk mk tk lại
x + 99 = 99 + 100 + 101
x + 99 = 300
x = 300 - 99
x = 201
x+99=99+100+101
x+99 =199+101
x+99=300
x=300-99
x =201
x+99=100+99+101
x+99=199+101
x+99=300
x=300-99
x=201