Solve the system of equations

Sy=-3x + 7

1 x = - 2y - 16

X=

Y=

y=-3x+7

and x=-2y-16

rearrange both to get x and y on one side

So it becomes ...

y+3x=7

x+2y=-16

if we want to cancel out the y terms first

(depends on your choice, I just chose y)

multiply the top equation by 2, and then subtract the equations

2y+6x=14

-x+2y=-16

5x=30

x=6

now substitute for find y (choose any equation you want out of the 2)

y + (3*6) = 7

y+18=7

y=7-18

y = - 11