Hey there! It looks like we're factoring. I always like to think of factoring as the opposite of the distributive property, and you'll see why. First, we have to <em>factor</em> out a common <em>factor</em> from 21p and 35q, which we'll use as 7. 7 times 3p = 21p and 7 times 5q = 35q Using our distributive property which is defined as: a(b+c) = ab+ac we have: 7(3p + 5q) Multiply it out and you'll get 21p and 35q. Hope this helps!
