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Since B is the midpoint of AC, AB =BC. So,BC=3x

1 Answer

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Answer:

3x + 4 = 2x + 12

-4 -4 Subtraction Property of Equality

3x = 2x + 8

-2x -2x Subtraction Property of Equality

x = 8

So your answer for x is 8

Explanation:

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