Question 62474
3X+Y=-8
5X-Y=-16 NOW JUST ADD THESE TWO EQUATIONS
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8X=-24
X=-24/8
X=-3 NOW SUBSTITUTE (-3) FOR X IN EITHER EQUATION & SOLVE FOR Y
3(-3)+Y=-8
-9+Y=-8
Y=-8+9
Y=1
PROOF
5(-3)-1=--16
-15-1=-16
-16=-16