Finding LCD of Rational Expressions

What is the least common denominator of 1/2 and 3/7?

• 2
• 14
• 7
• 28

What is the least common denominator of 1/9 and 2/3?

• 6
• 3
• 9
• 21

What is the least common denominator of 3/5 and 5/7?

• 35
• 25
• 7
• 30

What is the least common denominator of 2/4 and 4/7?

• 24
• 7
• 42
• 28

What is the least common denominator of 1/7 and 3/6?

• 14
• 21
• 7
• 42

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30
• 11
• 6
• 5

What number could be a common denominator for these two fractions?
2/3   and   3/4

• 3
• 4
• 7
• 12

What is the least common denominator of 6/8 and 4/12?

• 12
• 24
• 8
• 16

What is the least common denominator of 2/6 and 7/8?

• 36
• 8
• 18
• 24

What is the least common denominator of 1/4 and 2/5?

• 5
• 25
• 10
• 20