Finding Least Common Denominators

What is the least common denominator for \frac{2}{5}\ and\ \frac{3}{7}

• 15

• 21

• 35

• 40

• 3

• 6

• 12

• 18

• 12

• 6

• 4

• 24

• 8

• 48

Mathematical Equivalence

ON

What is the least common denominator of 1/4 and 2/3?

• 6

• 3

• 12

• 21

Least common denominator is

• 8

• 12

• 15

• 20

• 30

Least common denominator is

• 10

• 14

• 18

• 21

• 24

• 12

• 6

• 4

• 24

• 8

• 48

Least common denominator is 

• 12

• 16

• 24

• 28

• 48