Respuesta:
X = 7
Explicación paso a paso:
[tex]3(x - 3) + 4(x - 1) = 12(x - 4) \\ 3x - 9 + 4x - 4 = 12x - 48 \\ 7x - 13 = 12x - 48 \\ 48 - 13 = 12x - 7x \\ 35 = 5x \\ \frac{35}{5} = x \\ \frac{7}{1} = x \\ 7 = x[/tex]
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Respuesta:
X = 7
Explicación paso a paso:
[tex]3(x - 3) + 4(x - 1) = 12(x - 4) \\ 3x - 9 + 4x - 4 = 12x - 48 \\ 7x - 13 = 12x - 48 \\ 48 - 13 = 12x - 7x \\ 35 = 5x \\ \frac{35}{5} = x \\ \frac{7}{1} = x \\ 7 = x[/tex]