Explicación paso a paso:
Resolvemos la ecuacion
3(x-1) + 2(2x+3) = 12(x-1)
3x -3 + 4x + 6= 12x - 12
7x +3 = 12x - 12
3 + 12 = 12x - 7x
15 = 5x
15/5 = x
3 = x
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Explicación paso a paso:
Resolvemos la ecuacion
3(x-1) + 2(2x+3) = 12(x-1)
3x -3 + 4x + 6= 12x - 12
7x +3 = 12x - 12
3 + 12 = 12x - 7x
15 = 5x
15/5 = x
3 = x