Question

What’s the least common denominator (LCD) for each group of fractions? a. 1⁄6 and 7⁄8 b. 3⁄4 and 7⁄10 c. 7⁄12, 3⁄8 and 11⁄36 d. 8⁄15, 11⁄30 and 3⁄5

Answer 1

A. 24
B. 20
C. 72
D. 30

Answer 2

Answer: Least common denominator of:

a) 24

b) 20

c) 72

d) 30

Step-by-step explanation:

Since we have given that

1) $\frac{1}{6}\ and\ \frac{7}{8}$

Least common denominator of 6 and 8 is 24.

2)  $\frac{3}{4}\ and\ \frac{7}{10}$

Least common denominator of 4 and 10 is 20.

3)  $\frac{7}{12}\ and\ \frac{3}{8}\ and\ frac{11}{36}$

Least common denominator of 12, 8 and 36 is 72.

4) $\frac{8}{15}\ and\ \frac{11}{30}\ and\ frac{3}{5}$

Least common denominator of 15, 30 and 5 is 30.

Hence, Least common denominator of:

a) 24

b) 20

c) 72

d) 30