Simplify the following expression

C)

Step-by-step explanation:

In order to make our exponents positive, we use a rule that says that if we have:

We have the same base 7, we only have to add the exponents.

I'm going to solve the denominator separately so that you don't have to struggle to see the small numbers.

The resulting fraction is:

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation: