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4X-3y=15 ║x-2║-8X+6y =-30
29X=87
X=87/29
X=3.......(I)
7X+2y=19
7(3)+2y=19
21+2y=19
2y=19-21
2y=-2
y=-2/2
y=-1
5X-3y=
5(3)-3(-1)=
15-(-3)= 18.