X=35-y

This equation represents a linear relationship between x and y, where x is equal to 35 subtracted by y.

If you are preparing for university exams, it might be helpful to understand how to manipulate or solve equations like this one. Here are a few steps you can take:

1. If you have a specific value for x, you can substitute it into the equation to solve for y. For example, if x = 20, you can substitute it into the equation: 20 = 35 - y

2. Solve for y by isolating it on one side of the equation. Taking the example above, you can follow these steps: 20 = 35 - y Add y to both sides: 20 + y = 35 Subtract 20 from both sides: y = 15

3. If you have a specific value for y, you can substitute it into the equation to solve for x. For example, if y = 10, you can substitute it into the equation: x = 35 - 10 x = 25

These are just a few examples of how to work with an equation like x = 35 - y. Depending on the context and specific question, there may be other steps or methods to consider.