(y-25)+15=126

To solve the equation (y-25) + 15 = 126 in Russian, we need to follow these steps:

1. Combine the numbers in the equation: -25 + 15 = -10.
2. Substitute the combined result back into the equation: (y - 10) = 126.
3. To solve for y, isolate y by moving -10 to the other side of the equation by adding 10 to both sides: y = 126 + 10.
4. Calculate the final result: y = 136.

Therefore, the value of y in the equation is 136.