The Multiplication Property for Equations states that an equation can be multiplied or divided by the same number on each side of the equation without changing the solution to the equation.

There are overall 9 factors of 36 among which 36 is the biggest factor and its positive factors are 1, 2, 3, 4, 6, 9, 12, 18, and 36….Sum of Factors of 36: 91.

We can write 36 as a product of prime factors: 36 = 2² × 3². The expression 2² × 3² is said to be the prime factorization of 36.

9

The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9.

We found the factors and prime factorization of 12 and 15. The biggest common factor number is the GCF number. So the greatest common factor 12 and 15 is 3.

7 = 7. To find the GCF, multiply all the prime factors common to both numbers: Therefore, GCF = 7.

63 is the least common multiple of 7 and 9 .

Hence, the Least common multiple of 12 and 15 is 60.

Least Common Multiple of 3, 7, 9 Least common multiple (LCM) of 3, 7, 9 is 63.

2 Answers By Expert Tutors Your second question asks for the LCD for denominators of 9 and 7. A common denominator can always be the product of the two denominators, so 9*7 = 63 is a common denominator. Since one of the denominators is prime, there is no lower common denominator, so the answer is 63.