Question

Решыте уравнение

(780-m*60):6=70 и 640:(x*9+8)=8

Answer 1

1. (780-m*60):6=70
(780-60x):6=70
780-60x/6=70
6(130-10x)/6=70
130-10x=70
-10x=70-130
-10x=-60
x=6