Question

es para hoy panas :v​

Answer 1

Respuesta:

x=15/2

$\frac{1}{3} ( - \frac{5} {7} x + \frac{6}{7} ) = 1 - \frac{1}{3} x \\ \\ - \frac{5}{21} x + \frac{6}{21} = 1 - \frac{1}{3} x \\ \\ \frac{1}{3} x - \frac{5}{21} x = 1 - \frac{6}{21} \\ \\ \frac{7}{21} x - \frac{5}{21} x = \frac{15}{21} \\ \\ \frac{2}{21} x = \frac{15}{21} \\ \\ x = \frac{15 \times 21}{2 \times 21} = \frac{15}{2}$