Question

Solve each system of equations using elimination.

Answer 1

add them to eliminate x terms

x+3y=-7
-x-7y=19 +
0x-4y=12

-4y=12
divide by -4
y=-3
sub back
x+3y=-7
x+3(-3)=-7
x-9=-7
x=2

(x,y)
(2,-3)