5X + 4Y = -8 Add the 2 Eq. to
6X - 4Y = -80 eliminate y:
11X +0Y = -88
11X = -88
Divide both sides by 11:
X = -8
Substitute -8 for x in 1st Eq.
5*(-8) +4Y =- 8
Solve for Y:
-40 +4Y = -8
4Y = 32
Y = 8.
Solution set: X = -8, Y = 8.
5x + 4y = -8
6x - 4y = -80
1 answer