Question

$\frac{ x - 1 }{x} = 3$
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Answer 1

Explicación paso a paso:

$\frac{x - 1}{x} = 3 \\ \\ x - 1 = 3x \\ x - 3x = 1 \\ - 2x = 1 \\ x = - \frac{1}{2} \\ \\ comprobamos \\ \frac{ - \frac{ 1}{2} - 1}{ - \frac{1}{2} } = 3 \\ \\ \frac{ \frac{ - 1 - 2}{2} }{ - \frac{1}{2} } = 3 \\ \\ - \frac{3}{2} \div ( - \frac{1}{2} ) = 3 \\ \\ \frac{6}{2} = 3 \\ \\ 3 = 3$