To solve for w in the equation X = w + y, we want to isolate w on one side of the equation.
To do this, we can follow these steps:
1. Start with the equation: X = w + y.
2. Subtract y from both sides of the equation: X - y = w + y - y.
3. Simplify the right side of the equation: X - y = w.
4. Flip the sides of the equation to have w on the left side: w = X - y.
Therefore, the solution for w in terms of X and y is w = X - y.