15(y-4)-2(y-9)+5(y+6)=0
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15(y-4)-2(y-9)+5(y+6)=0
15y-60-2y+18+5y+30=0
15y-2y+5y-60+18+30=0
13y+5y-60+48=0
18y-12=0
18y=0+12
18y=12
y=12/18
y=2/3
15y-60-2y+18+5y+30=0
15y-2y+5y-60+18+30=0
13y+5y-60+48=0
18y-12=0
18y=0+12
18y=12
y=12/18
y=2/3
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