Explicación paso a paso:
[tex]3(x - 2(x - 2) + 3(x + 5)) = - 3(x + 2) \\ 3(x - 2x + 4 + 3x + 15) = - 3x - 6 \\ 3(2x + 19) = - 3x - 6 \\ 6x + 57 = - 3x - 6 \\ 6x + 3x = - 6 - 57 \\ 9x = - 63 \\ x = \frac{ - 63}{9} \\ x = - 7[/tex]
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Explicación paso a paso:
[tex]3(x - 2(x - 2) + 3(x + 5)) = - 3(x + 2) \\ 3(x - 2x + 4 + 3x + 15) = - 3x - 6 \\ 3(2x + 19) = - 3x - 6 \\ 6x + 57 = - 3x - 6 \\ 6x + 3x = - 6 - 57 \\ 9x = - 63 \\ x = \frac{ - 63}{9} \\ x = - 7[/tex]