Уравнение 8, стр 69 х+320=80×7

Question

Уравнение 8, стр 69
х+320=80×7

Answer 1

X+320=560
x=560-320
x=240

Answer 2

X+320=80×7
x+320=560
x=560-320
x=240
----------------------
240+320=80×7
560 =560