Explicación paso a paso:
[tex]3x + 5 = 9 \\ 3x = 9 - 5 \\ 3x = 4 \\ x = \frac{4}{3} \\ prueba \: \\ 3x + 5 = 9 \\ 3( \frac{4}{3} ) + 5 = 9 \\ \frac{12}{3} + 5 = 9 \\ 4 + 5 = 9 \\ 9 = 9[/tex]
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Explicación paso a paso:
[tex]3x + 5 = 9 \\ 3x = 9 - 5 \\ 3x = 4 \\ x = \frac{4}{3} \\ prueba \: \\ 3x + 5 = 9 \\ 3( \frac{4}{3} ) + 5 = 9 \\ \frac{12}{3} + 5 = 9 \\ 4 + 5 = 9 \\ 9 = 9[/tex]