x+36=45+21
x+36=66
x=66-36
x=30
k mk nhé,làm ơn
x + 36 = 45 + 21
x + 36 = 66
=> x= 66 - 36
x = 30
tk nhé !!!!!!!!
x + 36 = 45 + 21
x = 66
x = 66 - 36
x = 30
x + 36 = 45 + 21
x + 36 = 66
x = 66 - 36
x = 30
tk mik mik tk lại, please
x + 36 = 45 + 21
x + 36 = 66
x = 66 - 36
x = 30
x+36=45+21 (Viết đầy đủ:30+36=45+21)
x+36=66
x=66-36
x=30
Vậy x=30
x + 36 = 66
x = 66 - 36
x = 30
đúng ko
x + 36 = 45 + 21
x + 36 = 66
x = 66 - 36
x = 30
x+36=45+21
x+36=66
x=66-36
x=30
Vây x=30
x + 36 = 45 + 21
x + 36 = 66
x = 66 - 36
x = 30
x + 36 = 45 + 21
x + 36 = 66
x = 66 - 36
x = 30
x + 36= 45+21
x + 36 = 66
x = 66-36
x=30