Question

x * 7 + x * 9 - x - x 5 = 790

Answer 1

x * 7 + x * 9 - x - x5 = 790

x * ( 7 + 9 - 1 - 5) = 790

x * 10 = 790

x = 790 : 10

x = 79

Vậy x = 79

Nhớ k mình nha.Thank you so much