# Least Common Multiple of 12 and 14

Least common multiple (LCM) of 12 and 14 is **84**.

LCM(12,14) = 84

*Least common multiple* or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

## Least Common Multiple of 12 and 14 with GCF Formula

The formula of **LCM** is LCM(a,b) = ( a × b) / GCF(a,b).

We need to calculate greatest common factor 12 and 14, than apply into the LCM equation.

GCF(12,14) = 2

LCM(12,14) = ( 12 × 14) / 2

LCM(12,14) = 168 / 2

LCM(12,14) = 84

## Least Common Multiple (LCM) of 12 and 14 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12 and 14. First we will calculate the **prime factors of 12 and 14**.

### Prime Factorization of 12

Prime factors of 12 are 2, 3. Prime factorization of **12** in exponential form is:

12 = 2^{2} × 3^{1}

### Prime Factorization of 14

Prime factors of 14 are 2, 7. Prime factorization of **14** in exponential form is:

14 = 2^{1} × 7^{1}

Now multiplying the highest exponent prime factors to calculate the **LCM of 12 and 14**.

LCM(12,14) = 2^{2} × 3^{1} × 7^{1}

LCM(12,14) = 84

## Recent Comments

how to do this: 4/14-3/14=?/12 need something over 12 using LCM of 84