Question

3x+4=9 y la ecuacion x-2y=-4

Answer 1

3x+4=9

X=-4+2y

X=-2y

3(-2y)+4=9

-6y+4=9

-2y=9

Y=9/-2

Y=-4.5

X-2y=-4

X-2(4.5)=-4

X-9=-4

X=-4+9

x=5