Решите уравнение -3/7а+5/6а-8/21а=-1/49

Question

Решите уравнение -3/7а+5/6а-8/21а=-1/49

Answer 1

A = 6/7.................................................

Answer 2

-3/7а+5/6а-8/21а=-1/49
-18/42а+35/42а-16/42а=-1/49
1/42а=-1/49
а=-1/49:1/42
а=-6/7