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-3X+4y=24
1) 5X=-1+2y
2) -3(-1+2y)+4y=24
3-6y+4y= 24-3
-2y=21
y= 21/2
y= -10.5
5x-2(-10.5)=-1
5x-21=-1
5x=1 +21
x=22/5
x=4,4