Convert the following fractions to equivalent fractions with a common denominator: a) 3/4 and 7/8 b) 1/3 and 11/18

Here are the fractions expressed with the same denominator:

• Row 1:
  1. For $\frac{3}{4}$ and $\frac{7}{8}$: The least common multiple (LCM) of 4 and 8 is 8. $$\frac{3}{4} = \frac{3 \times 2}{4 \times 2} = \frac{6}{8}$$ $$\frac{7}{8}$$ Result: $\boxed{\frac{6}{8} \text{ and } \frac{7}{8}}$
  2. For $\frac{1}{3}$ and $\frac{11}{18}$: The LCM of 3 and 18