Addition and Subtraction of Fractions

$\frac{7}{13}+\frac{2}{13}=$_____

$\frac{8}{11}-\frac{3}{11}=$_____

$\frac{2}{7}+\frac{4}{7}=\frac{6}{7}$

Subtract: $\frac{3}{11}-\frac{1}{11}$

Subtract: $\frac{9}{13}-\frac{4}{13}$

Subtract: $\frac{31}{27}-\frac{4}{27}$

Add: $\frac{5}{13}+\frac{4}{13}$

Add: $\frac{3}{11}+\frac{2}{11}+\frac{4}{11}$

Subtract: $\frac{3}{7}-\frac{2}{7}$

Subtract: $\frac{19}{38}-\frac{11}{38}$

Subtract: $\frac{14}{17}-\frac{11}{17}$

Subtract: $\frac{18}{20}-\frac{13}{20}$

Subtract: $\frac{3}{19}-\frac{2}{19}$

Subtract: $\frac{4}{7}-\frac{1}{7}$

Find the sum $\frac{7}{11}+\frac{3}{11}+\frac{2}{11}$

Subtract: $\frac{3}{16}$ from $\frac{11}{16}$

Subtract: $\frac{3}{9}$ from $\frac{5}{9}$

Subtract: $\frac{4}{15}$ from $\frac{13}{15}$

Subtract: $\frac{3}{10}$ from $\frac{6}{10}$

Subtract: $\frac{5}{16}$ from $\frac{11}{16}$