Question

9r-9s = 18
-r +4s = -2
Resolver con el método de suma o resta plis​

Answer 1

Respuesta:

$\left \{ {{r=2} \atop {s=0}} \right.$

Explicación paso a paso:

$\left \{ {{9r-9s=18} \atop {-r+4s=-2}} \right.$

$\left \{ {{r-s=2} \atop {-r+4s=-2}} \right.$

r-s+(-r+4s)=2+(-2)

r-s-r+4s=2-2

-s+4s=2-2

s=0

r=2