Question

Помогите с
примерах :::::::
780-x=630:9

Answer 1

780-x=630:9
780-x=70
x=780-70
x=710
780-710=70
Ответ:х=710

Answer 2

780-х=630÷9
780-х=70
х=780-70
х=710
780-710=630÷9
70=70