Answer
$\frac{9}{10}$
Work Step by Step
$\frac{3}{4} + \frac{3}{20}$
the least common denominator for the denominators 4 and 20 is 20.
To obtain denominators of 20, multiply the numerator and denominator of the first fraction by 5
$\frac{3}{4} + \frac{3}{20}$ = $\frac{3*5}{4*5} + \frac{3}{20}$
$\frac{15}{20} + \frac{3}{20}$
Add the numerators and put this sum over the least common denominator.
$\frac{15+3}{20}$ = $\frac{18}{20}$
Since 2 is the greatest common factor of 18 and 20, divide numerator and denominator by 2
So, $\frac{9*2}{10*2}$ = $\frac{9}{10}$
