LCM of 9 and 33
99 is the LCM of 9 and 33. The step-by-step solution using prime factors and special division methods is one of the simple methods to easily understand how to find what is the LCM of 9 and 33, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 9 and 33?
lcm (9 33) = (?)
9 => 3 x 3
33 => 3 x 11
= 3 x 3 x 11
= 99
lcm (9 and 33) = 99
99 is the LCM of 9 and 33.
where,
9 is a positive integer,
33 is a positive integer,
99 is the LCM of 9 and 33,
{3} in {3 x 3, 3 x 11} is the common factors of 9 and 33,
{3 x 11} in {3 x 3, 3 x 11} are the uncommon factors of 9 and 33.
Use in Mathematics: LCM of 9 and 33
The below are some of the mathematical applications where lcm of 9 and 33 can be used:
- to find the least number which is exactly divisible by 9 and 33.
- to find the common denominator for two fractions having 9 and 33 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 9 and 33 helps to find the exact time when two similar and recurring events with different time schedule happens together at the same time. For example, the real world problems involve lcm in situations to find at what time the bells A and B all toll together, if bell A tolls at 9 seconds and bell B tolls at 33 seconds repeatedly. The answer is that all bells A and B toll together at 99 seconds for the first time, at 198 seconds for the second time, at 297 seconds for the third time and so on.
Important Notes: 9 and 33 lcm
The below are the important notes to be remembered while solving the lcm of 9 and 33:
- The common prime factors and the remaining prime factors of 9 and 33 should be multiplied to find the least common multiple of 9 and 33, when solving lcm by using prime factors method.
- The results of lcm of 9 and 33, and the lcm of 33 and 9 are identical, it means the order of given numbers in the lcm calculation doesn't affect the results.
How-to: What is the LCM of 9 and 33?
The below solved example with step by step work shows how to find what is the lcm of 9 and 33 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 9 and 33?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 9
B = 33
What to be found:
find the lcm of 9 and 33
step 2 Find the prime factors of 9 and 33:
Prime factors of 9 = 3 x 3
Prime factors of 33 = 3 x 11
step 3 Identify the repeated and non-repeated prime factors of 9 and 33:
{3} is the most repeated factor and {3 x 11} are the non-repeated factors of 9 and 33.
step 4 Find the product of repeated and non-repeated prime factors of 9 and 33:
= 3 x 3 x 11
= 99
lcm(9 and 33) = 99
Hence,
lcm of 9 and 33 is 99
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 9 and 33.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 9 and 33
What to be found:
lcm (9, 33) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
9 and 33
step 3 Choose the divisor which divides each or most of the given integers (9 and 33), divide each integers separately and write down the quotient in the next line right under the respective integers. Bring down the integer to the next line if any integer in 9 and 33 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 3 | 9 | 33 |
| 3 | 3 | 11 |
| 11 | 1 | 11 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 9 and 33:
= 3 x 3 x 11
= 99
LCM(9, 33) = 99
The LCM of two numbers 9 and 33 is 99