Question 68650
{{{(5-(1/(a+1)))/(3+(2/(a+1)))}}}
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To simplify Rational expression is to multiply the numerator and denominator by the LCD (Least Common Denominator) 
{{{(5-(1/(a+1)))/(3+(2/(a+1)))}}} LCD = a+1
<br>{{{((5-(1/(a+1)))/(3+(2/(a+1))))*((a+1)/(a+1))}}} 
<br>{{{((5-(1/(a+1)))*(a+1))/(3+(2/(a+1))*(a+1))}}}
<br>{{{(5(a+1)-(1/(a+1))*(a+1))/(3(a+1)+(2/(a+1))*(a+1))}}}
<br>{{{(5(a+1)-1)/(3(a+1)+2)}}}
<br>{{{(5a+5-1)/(3a+3+2)}}}
<br>{{{highlight ((5a+4)/(3a+5))}}}