Answer
The sum or difference of two fractions with identical denominators is
the sum or difference of their numerators over the common denominator.
$\displaystyle \frac{a}{b}+\frac{c}{b}= \displaystyle \frac{a+c}{b}$
Work Step by Step
The sum or difference of two fractions with identical denominators is
the sum or difference of their numerators over the common denominator.
$\displaystyle \frac{a}{b}+\frac{c}{b}= \displaystyle \frac{a+c}{b}$
Example
$\displaystyle \frac{5}{12}+\frac{1}{12}=\frac{5+1}{12}$
$=\displaystyle \frac{6}{12}=\frac{(6)}{(6)\times 2}=\frac{1}{2}$
Example
$\displaystyle \frac{5}{12}-\frac{1}{12}=\frac{5-1}{12}$
$=\displaystyle \frac{4}{12}=\frac{(4)}{(4)\times 3}=\frac{1}{3}$
