Question

помогите решить .......

Answer 1

1 1/9m + 5/12 = 7/15
1 1/9m = 7/15 - 5/12
10/9m = 28/60 - 25/60
10/9m = 3/60
10/9m = 1/20
m = 1/20 : 10/9
m = 9/200