Add and Subtract Fractions with Common Denominators

EXAMPLE 4.53

Find the sum: $\dfrac{3}{5}+\dfrac{1}{5}$.

EXAMPLE 4.54

Find the sum: $\dfrac{x}{3}+\dfrac{2}{3}$.

EXAMPLE 4.55

Find the sum: $-\dfrac{9}{d}+\dfrac{3}{d}$.

EXAMPLE 4.56

Find the sum: $\dfrac{2 n}{11}+\dfrac{5 n}{11}$.

EXAMPLE 4.57

Find the sum: $-\dfrac{3}{12}+\left(-\dfrac{5}{12}\right)$.

EXAMPLE 4.59

Find the difference: $\dfrac{23}{24}-\dfrac{14}{24}$.

EXAMPLE 4.60

Find the difference: $\dfrac{y}{6}-\dfrac{1}{6}$.

EXAMPLE 4.61

Find the difference: $-\dfrac{10}{x}-\dfrac{4}{x}$.

EXAMPLE 4.62

Simplify: $\dfrac{3}{8}+\left(-\dfrac{5}{8}\right)-\dfrac{1}{8}$.