Question

3x + 2y = -4
x + 2y = -8
Solve the systems using substitution

Answer 1

3x + 2y = -4
=>3(-2y-8) + 2y = -4
=>-6y-24+2y=-4
=>4y=-20
=>y=-5
=>x=2

Answer 2

from the second equation we get x= -8 -2y

substituting in first

3(-8-2y) + 2y = -4

-24 -6y + 2y = -4

4y = -20

y = -5