Question

x+320=80*7 зделать проверку

Answer 1

X+320=80*7
х+320=560
х=560-320
х=240

Проверка:
240+320=80*7
560=560

Answer 2

x=80•7=560,x=560,560-320=240.Проверка : 240+320=80•7, x=240