Respuesta :

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Answer:

A___B___C

AC = AB+ BC

3x +12 = ( 14) + (3-2x)

3x + 12 = – 2x + 17

3x + 2x = 17 - 12

5x = 5

x=5/5

x = 1

AC = 3x + 12 = 3(1) + 12 = 3 + 12= 15

I hope I helped you^_^

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