решите уравнение 4/15-(у+3/25)=1/25 помогите

4/15 - (у + 3/25) = 1/25
у + 3/25 = 4/15 - 1/25 = 20/75 - 3/75 = 17/75
у = 17/75 - 3/25 = 17/75 - 9/75 = 8/75
у = 8/75
---------------------------------
Проверка: 4/15 - (8/75 + 3/25) = 1/25
                  4/15 - 17/75 = 1/25
                  20/75 - 17/75 = 3/75 = 1/25