Question

Помогите решить линейное уравнение:
1/21y-1/3y-1/14y=5/14

Answer 1

1/21y-1/3y-1/14y=5/14
(1*2 - 1*14 - 1*3)/42y = 5/14
-15/42y = 5/14
y = 5/14 : (-15/42)
y = 5/14 * (-42/15)
y = -1