Explicación paso a paso:
4 (2x-1) = 9 (x-1)
8x - 4 = 9x - 9
8x - 9x = -9 + 4
-x = -5
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Explicación paso a paso:
4 (2x-1) = 9 (x-1)
8x - 4 = 9x - 9
8x - 9x = -9 + 4
-x = -5