4. Fractions

Find the least common denominator of each set of fractions.

$\frac{3}{8},\frac{5}{12}$

Find the least common denominator of each set of fractions.

$-\frac{2}{9},\frac{7}{15}$

Find the least common denominator of each set of fractions.

$\frac{1}{5},\frac{1}{7},\frac{7}{14}$

Find the least common denominator of each set of fractions.

$\frac{1}{3x},\frac{7}{12}$