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RESOLVIENDO:
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8x + 5 - 2x = 45 + x
6x + 5 = 45 + x
6x - x = 45 - 5
5x = 40
x = 40 ÷ 5
x = 8
RESPUESTA:
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X = 8
8x -2x - x = 45 - 5
5x = 40
x = 40: 5
x = 8