105 and 147 LCM
LCM of 105 and 147 is equal to 735. The comprehensive work provides more insight of how to find what is the lcm of 105 and 147 by using prime factors and special division methods, and the example use case of mathematics and real world problems.
what is the lcm of 105 and 147?
lcm (105 147) = (?)
105 => 3 x 5 x 7
147 => 3 x 7 x 7
= 3 x 7 x 5 x 7
= 735
lcm (105 and 147) = 735
735 is the lcm of 105 and 147.
where,
105 is a positive integer,
147 is a positive integer,
735 is the lcm of 105 and 147,
{3 x 7} in {3 x 5 x 7, 3 x 7 x 7} are the common factors of 105 and 147,
{5 x 7} in {3 x 5 x 7, 3 x 7 x 7} are the uncommon factors of 105 and 147.
Use in Mathematics: LCM of 105 and 147
The below are some of the mathematical applications where lcm of 105 and 147 can be used:
- to find the least number which is exactly divisible by 105 and 147.
- to find the common denominator for two fractions having 105 and 147 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 105 and 147 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 105 seconds and bell B tolls at 147 seconds repeatedly. The answer is that all bells A and B toll together at 735 seconds for the first time, at 1470 seconds for the second time, at 2205 seconds for the third time and so on.
Important Notes: 105 and 147 lcm
The below are the important notes to be remembered while solving the lcm of 105 and 147:
- The common prime factors and the remaining prime factors of 105 and 147 should be multiplied to find the least common multiple of 105 and 147, when solving lcm by using prime factors method.
- The results of lcm of 105 and 147, and the lcm of 147 and 105 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 105 and 147?
The below solved example with step by step work shows how to find what is the lcm of 105 and 147 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 105 and 147?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 105
B = 147
What to be found:
find the lcm of 105 and 147
step 2 Find the prime factors of 105 and 147:
Prime factors of 105 = 3 x 5 x 7
Prime factors of 147 = 3 x 7 x 7
step 3 Identify the repeated and non-repeated prime factors of 105 and 147:
{3, 7} are the most repeated factors and {5 x 7} are the non-repeated factors of 105 and 147.
step 4 Find the product of repeated and non-repeated prime factors of 105 and 147:
= 3 x 7 x 5 x 7
= 735
lcm(105 and 147) = 735
Hence,
lcm of 105 and 147 is 735
This special division method is the easiest way to understand the entire calculation of what is the lcm of 105 and 147.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 105 and 147
What to be found:
lcm (105, 147) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
105 and 147
step 3 Choose the divisor which divides each or most of the given integers (105 and 147), 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 105 and 147 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 3 | 105 | 147 |
| 5 | 35 | 49 |
| 7 | 7 | 49 |
| 7 | 1 | 7 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 105 and 147:
= 3 x 5 x 7 x 7
= 735
LCM(105, 147) = 735
The least common multiple for two numbers 105 and 147 is 735