Question

Помогите решить уравнение) 3 5/7 +m=2 8/21

Answer 1

3   5/7 + m = 2   8/21
m = 2   8/21 - 3   5/7
m = 2   8/21 - 3   15/21
m = - (3  15/21 - 2  8/21)
m = - 1    7/21
m = - 1   1/3