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5(2x-1)-3(y+1)=15
2x+2+y-1=20
10x-5-3y-3=15
2x+y=19
10x-3y-8=15
10x-3y=23
6x+3y=57
16x=72
x=4,5
2.4,5+y=19
9+y=19
y=19-9=10