Question

(3/7х-5/6)•1 2/13=2/5

Answer 1

Ответ:x=7

Пошаговое объяснение:

(3/7x-5/6)*1 2/13=2 1/2

(3/7x-5/6)*15/13=5/2

3/7x-5/6=5/2:15/13

3/7x-5/6=5/2*13/15

3/7x-5/6=1/2*13/3

3/7х-5/6=13/6

3/7х=13/6+5/6

3/7х=18/6

3/7х=3

х=3:3/7

х=3*7/3

х=7