LCM of 56 and 76
1064 is the LCM of 56 and 76. 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 56 and 76, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 56 and 76?
lcm (56 76) = (?)
56 => 2 x 2 x 2 x 7
76 => 2 x 2 x 19
= 2 x 2 x 2 x 7 x 19
= 1064
lcm (56 and 76) = 1064
1064 is the LCM of 56 and 76.
where,
56 is a positive integer,
76 is a positive integer,
1064 is the LCM of 56 and 76,
{2 x 2} in {2 x 2 x 2 x 7, 2 x 2 x 19} are the common factors of 56 and 76,
{2 x 7 x 19} in {2 x 2 x 2 x 7, 2 x 2 x 19} are the uncommon factors of 56 and 76.
Use in Mathematics: LCM of 56 and 76
The below are some of the mathematical applications where lcm of 56 and 76 can be used:
- to find the least number which is exactly divisible by 56 and 76.
- to find the common denominator for two fractions having 56 and 76 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 56 and 76 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 56 seconds and bell B tolls at 76 seconds repeatedly. The answer is that all bells A and B toll together at 1064 seconds for the first time, at 2128 seconds for the second time, at 3192 seconds for the third time and so on.
Important Notes: 56 and 76 lcm
The below are the important notes to be remembered while solving the lcm of 56 and 76:
- The common prime factors and the remaining prime factors of 56 and 76 should be multiplied to find the least common multiple of 56 and 76, when solving lcm by using prime factors method.
- The results of lcm of 56 and 76, and the lcm of 76 and 56 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 56 and 76?
The below solved example with step by step work shows how to find what is the lcm of 56 and 76 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 56 and 76?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 56
B = 76
What to be found:
find the lcm of 56 and 76
step 2 Find the prime factors of 56 and 76:
Prime factors of 56 = 2 x 2 x 2 x 7
Prime factors of 76 = 2 x 2 x 19
step 3 Identify the repeated and non-repeated prime factors of 56 and 76:
{2, 2} are the most repeated factors and {2 x 7 x 19} are the non-repeated factors of 56 and 76.
step 4 Find the product of repeated and non-repeated prime factors of 56 and 76:
= 2 x 2 x 2 x 7 x 19
= 1064
lcm(56 and 76) = 1064
Hence,
lcm of 56 and 76 is 1064
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 56 and 76.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 56 and 76
What to be found:
lcm (56, 76) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
56 and 76
step 3 Choose the divisor which divides each or most of the given integers (56 and 76), 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 56 and 76 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 56 | 76 |
| 2 | 28 | 38 |
| 2 | 14 | 19 |
| 7 | 7 | 19 |
| 19 | 1 | 19 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 56 and 76:
= 2 x 2 x 2 x 7 x 19
= 1064
LCM(56, 76) = 1064
The LCM of two numbers 56 and 76 is 1064