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Yo can I get some help with this question

Yo can I get some help with this question-example-1

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Answer:

Explanation:

D is congruent to b so the answer is equal to 45 + 3x -10 + 2x + 10 = 180 . this can be to 45 + 5x = 180, and further to 5x + 135 to x=27

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