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Alguien sabe como se hace esto?

Alguien sabe como se hace esto? (con explicación / procedimiento por favor) A) (5 - 3x) - ( - 3x + 6) = 8(x + 11) - (3x - 6) B) 7(3 + 1) + 8(2x - 3) = 4(3x - 1) - 7(x - 4.

En resumen

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Alamoslilian64
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