Question

9m+20y =33
8m+15y = 21

Answer 1

Respuesta:

1.

$m = - \frac{ 20}{9} y + \frac{11}{3}$

2.

$m = - \frac{15 }{8} y + \frac{21}{8}$

$y = - \frac{18}{15} m + \frac{7}{5}$