A:

To make 2 fractions have the same denominator, follow these steps.

Multiply the denominators of the 2 fractions, we'll say that's 'X', then multiply the second fraction's denominator by the first fraction's numerator, let's call that number 'Y'. Now, repeat that, but with the first fraction's denominator, and the second fraction's numerator, now let's call that number 'Z'. Use the diagram shown for information on where to place the variables (X, Y, Z).