2 years ago

How do you collect and distribute. -c+5c-3a(a+3a)

1 answer:

5 0

First, add in the parentheses. a+3a=4a. Then, make subtraction into adding negatives. (-c)+5c +(-3a)+4a. It becomes 4c+a.

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<u>Answer:</u>

<u>Step-by-step explanation:</u>

The sum of interior angles of a quadrilateral is 360°.

If we consider the measure of one of the unknown angles to be $x$ °, we can set up the following equation:

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