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5y+6y-7y-65y=102-81
11y-7y-65y=21
3y-65y=21
-62y=21
y=21/-62
x-(2x+1)=8-(3x+3)
x-2x+1=8-3x+3
x-2x+3x=8+3-1
2x=10
x=10/2
x=5