Explicación paso a paso:
[tex]3(3x - 1) + 4(9 - 5x) = 0 \\ 9x - 3 + 36 - 20x = 0 \\ - 11x + 33 = 0 \\ - 11x = - 33 \\ x = \frac{ - 33}{ - 11} \\ x = 3 [/tex]
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Explicación paso a paso:
[tex]3(3x - 1) + 4(9 - 5x) = 0 \\ 9x - 3 + 36 - 20x = 0 \\ - 11x + 33 = 0 \\ - 11x = - 33 \\ x = \frac{ - 33}{ - 11} \\ x = 3 [/tex]