# How to create common denominators

### How do you add two different denominators?

If the

**denominators**are not the same, then you have to use equivalent fractions which do have a common**denominator**. To do this, you need to find the least common**multiple**(LCM) of the**two denominators**. To**add**fractions with**unlike denominators**, rename the fractions with a common**denominator**. Then**add**and simplify.### How do you find a common denominator quickly?

### How do I make fractions the same denominator?

### How do you find the common denominator of two fractions?

### What is the common denominator of 4 and 2?

Explanation: Multiples of

**2**are {**2**,**4**,6,8,10,12,14,16,} Multiples of**4**are {**4**,8,12,16,.) Hence**common**multiples are {**4**,8,12,16,} and Lowest**Common**Multiple is**4**.### What is the common denominator of 5 and 3?

Least

**common**multiple (**LCM**) of**3**and**5**is 15.### What is the GCF of 15 and 30?

Example:

**What is the greatest common factor of 15 and 30**? The common factors of**15 and 30**are 1, 3, 5, and**15**. The**greatest common factor**is**15**.### What are 3 common multiples of 3 and 5?

15 and 30 are

**common multiples of 3 and 5**. Any two numbers have an infinite amount of**common multiples**.### What is the LCM of 3 and 4?

The

**Least Common Multiple**(LCM) of some numbers is the smallest number that the numbers are**factors**of. Like the LCM of 3 and 4 is 12, because 12 is the smallest number that 3 and 4 are both**factors**for.### What is the LCM of 3 and 7?

What is the

**Least Common Multiple**of 3 and 7?**Least common multiple**(LCM) of 3 and 7 is 21.### What is the GCF of 3 and 4?

**Greatest common factor**(

**GCF) of 3 and 4**is 1.

### What is the HCF of 12 and 16?

Thus, the

**HCF of 12 and 16**is ‘4’. Now that we have the**HCF of ’12’ and ’16**‘ as ‘4’, we can find the**HCF**of ‘4’ and ’28’ and it will be our required**HCF**.### What is the HCF of 12?

Factors of

**12**= 1, 2, 3, 4, 6 and**12**. Factors of 18 = 1, 2, 3, 6, 9 and 18. Therefore, common factor of**12**and 18 = 1, 2, 3 and 6. Highest common factor (**H.C.F) of 12**and 18 = 6 [since 6 is the highest common factor].### What is the HCF of 5 12 and 16?

Answer:

**HCF**of**12 and 16**is 4.### What is the HCF of 16 and 24?

Thus, the

**HCF of 16 and 24**is 8.### What is the HCF of 16 and 13?

Final Step: Biggest Common Factor Number

The biggest common factor number is the GCF number. So the **greatest common factor 13** and **16** is 1.

### What is the HCF of 16 and 18?

Well, The

**HCF**(Highest Common Factor) of**16 and 18**is 2.### What is the HCF of 15?

**HCF**Example

The factors of **15** are : 1, 3, 5, **15**. 1 and 3 are the only common factors (numbers which are factors of both 12 and **15**). Therefore, the highest common factor of 12 and **15** is 3. to see whether you are correct.

### What is the HCF of 15 & 20?

So the

**greatest common factor 15**and**20**is 5.### What is the HCF of 10 15 and 30?

Answer: 5 is the

**HCF**of of**10**,**15 and 30**.### What is the HCF of 15 and 18?

What is the GCF of

**15 and 18**? The GCF of**15 and 18**is 3.### What is the HCF of 18 and 24?

So the

**greatest common factor 18 and 24**is 6.### What is the HCF of 15 and 35?

Factors of

**35**(Thirty five) = 1, 5, 7 and**35**. Therefore, common factor of**15**(Fifteen) and**35**(Thirty five) = 1 and 5. Highest common factor (**H.C.F) of 15**(Fifteen) and**35**(Thirty five) = 5.