Respostas

2012-11-23T07:29:41-02:00

\frac{12x-21}{3} +6x + 11 ⇔

4x-7+6x+11 ⇔

4x-7+6x+11 ⇔

10x=-4 ⇔

x= \frac{-4}{10} ⇔

x= \frac{-2}{5}

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