Question

[hariwon de thuong]

x + 78 = 99 - 11

Answer 1

[hello kitty]

x+78=99-11

x+78=88

x=88-78

x=10

k cho mình nha hariwon de thuong cảm ơn bạn nha

Answer 2

[hariwon de thuong]

x + 78 = 99 - 11

x + 78 = 88

x         = 88 - 78

x         = 10