Question

método de igualación
{x-y=6
{x+2y=-1​

Answer 1

Respuesta:

x = 6 +y

x = -1 -2y

6+y = -1 -2y

7 = -3y

y = -7/3

x + 7/3 = 6

x = 6-7/3

x = 11/3