to solve the unexplained problems you need to use the distributive property.
Basically what it is, if you have a(b + c) it is equal to multiplying the a by the two terms in the parenthesis, b and c.
In other words, a(b + c) = ab + ac
When you multiply fraction, you multiply both the tops and both the bottoms of the fraction.
So like if you had: the answer would be
Use this to attempt these problems, and we'll tell you if they are correct.