Question

hallar el valor de la x

7 (X-5) - X = 3

X+5X= -10+3

Answer 1

Explicación paso a paso:

$1) \\ 7(x - 5) - x = 3 \\7x - 35 - x = 3 \\ 6x = 3 + 35 \\ 6x = 38 \\ \\ x = \frac{38}{6} \\ \\ x = \frac{19}{3} \\ \\ comprobación \\ \\ 7( \frac{19}{3} - 5) - \frac{19}{3} = 3 \\ \\ 7( \frac{19 - 15}{3} ) - \frac{19}{3} = 3 \\ \\ 7 \times \frac{4}{3} - \frac{19}{3} = 3 \\ \\ \frac{28}{3} - \frac{19}{3} = 3 \\ \\ \frac{9}{3} = 3 \\ \\ 3 = 3\\ \\2) \\ x + 5x = - 10 + 3 \\ 6x = - 7 \\ \\ x = - \frac{7}{6} \\ \\ comprobación \\ \\ - \frac{7}{6} + 5 \times ( - \frac{7}{6} ) = - 10 + 3 \\ \\ - \frac{7}{6} - \frac{35}{6} = - 7 \\ \\ - \frac{42}{6} = - 7 \\ \\ - 7 = - 7$