Answer:
12x + 3 + 7x - 13 = 180
Explanation:
Q and R are Same Side Interior Angles
If you add any two same side interior angles for a trapezoid, they will equal 180 degrees.
Therefore, 12x + 3 + 7x - 13 = 180 degrees
The top and bottom sides of the trapezoid are parallel, but the sides are not. This means that the two angles that we are trying to find cannot be equal. In this case, this can only mean that both sides can be combined to complete a 180 degree angle. This can also be determined since they are supplementary angles, or angles that are adjacent to the opposite side of another base.
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