Question

3x-2y= -10 4x + 5y = 140 metodo de sustitucion

Answer 1

Solución
x= - 70/23
y=700/23

Answer 2

Respuesta:

(X,Y) = (-980/193, -14980/193)

Explicación paso a paso:

{3x - 2y =140

{-104x + 5y = 140

{312x - 208y = 14560

{-312x + 15y = 420

-193y = 14980

y = -14980/193

3x - 2*(-14980/193) = 140

X= -980/193

(X,Y) = (-980/193, -14980/193)

3*(-980/193) -2*(-14980/193) = -104*(-980/193)+5*(14980/193) = 140

140=140=140

(X,Y) = (-980/193, -14980/193)