Question

ecuaciones con números racionales, por favor, esbpara estudiar para un examen
doy 30 puntos

Answer 1

Saludos

$\frac{5}{9} x-5= \frac{3}{4} x+2$
$\frac{5}{9} x-\frac{3}{4} x= 5+2$
$\frac{20}{36} x-\frac{27}{36} x= 7$
$-\frac{7}{36} x= 7$
$x= -7 \frac{36}{7} =-36$
$x= -36$

$\frac{4}{3} x+8= \frac{2}{5} x-3$
$\frac{4}{3} x-\frac{2}{5}x=-3-8$
$\frac{20}{15} x-\frac{6}{15} x= -11$
$\frac{14}{15} x= -11$
$x= -11 \frac{15}{14}$
$x= - \frac{165}{11}$

$\frac{4}{3} x+8= 5x- \frac{3}{8}$
$\frac{4}{3} x-5x= - \frac{3}{8} +8$
$\frac{4}{3} x- \frac{15}{3} x= - \frac{3}{8} + \frac{64}{8}$
$- \frac{11}{3} x= \frac{61}{8}$
$x= \frac{61*3}{8*11}$
$x= \frac{183}{88}$

$\frac{4}{7} x-128= 5x- \frac{4}{5}$
$\frac{4}{7} x-5x= - \frac{4}{5}+128$
$\frac{4}{7} x- \frac{35}{7} x= - \frac{4}{5}+ \frac{640}{5}$
$- \frac{31}{7} x= \frac{636}{5}$
$x= -\frac{636*7}{5*31}$
$x= -\frac{4452}{155}$

Espero te sirva