Question

2 задание.
даю 12 баллов))))

Answer 1

1) 2/3 x = 12 | *3x
2 = 36x
x = 2/36
x = 1/18

2)11,2=8x
x = 11,2/8
x = 1.4

задача 2
7x + x = 72 km
8x = 72 km
x = 9 km
Ответ 9 км