Question 587716
Perform the indicated operations and simplify. 
y-6 y+1 y-63
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y-9 y+9 y^2-81 

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Rewrite each fraction with the lcd as its denominator:
[(y-6)(y+9]/lcd - [(y+1)(y-9)]/lcd + (y-63)/lcd
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Combine the numerators over the lcd:
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= [y^2+3y-45 - (y^2-8y-9) + (y-63)]/lcd
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Simplify:
= [3y+8y+y-45+9-63]/lcd
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= [12y-99]/lcd
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= [12y-99]/[y^2-81]
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Cheers,
Stan H.
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