Answer:i dont know 1
2. variable
3. terms
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Answer:
x = 7
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The sum of the interior angles is 90°, so you have ...
(7x +8) +(5x -2) = 90
12x = 84 . . . . subtract 6; next, divide by 12
x = 7
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this chart is a life saver!
Answer:
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