Question 379747
{{{y^2-5y-14=(y-7)(y+2)}}}
{{{y^2-4y-21=(y-7)(y+3)}}}
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{{{(y^2-5y-14)/(y^2-4y-21)=((y-7)(y+2))/((y-7)(y+3))}}}
{{{(y^2-5y-14)/(y^2-4y-21)=highlight((y+2)/(y+3))}}}