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OpenStudy (anonymous):
Given: 3x - 4 = 2(x + 8), Prove: x = 20 what is the reason for x=20?
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myininaya (myininaya):
It is saying they already found the answer for you and it just wants you to verify they found the right answer. So replace x with 20 in your equation and see if both sides are the same. Do 3(20)-4 and see if is equal to 2(20+8)
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