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7y+x=0
(x+y)/2-1/5=6/10(y-x)-8
x=-7y
5x+5y-2=6(y-x)-8
x=-7y
-35y+5y-2=48y-8
x=-7y
-30y-2=48y-8
x=-7y
-78y=-6
x=-7y
y=1/13
x=- (7/13)