LCM of 7 and 209
1463 is the LCM of 7 and 209. 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 7 and 209, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 7 and 209?
lcm (7 209) = (?)
7 => 7
209 => 11 x 19
= 7 x 11 x 19
= 1463
lcm (7 and 209) = 1463
1463 is the LCM of 7 and 209.
where,
7 is a positive integer,
209 is a positive integer,
1463 is the LCM of 7 and 209,
There is no common factors of 7 and 209 in {7, 11 x 19},
{7 x 11 x 19} in {7, 11 x 19} are the uncommon factors of 7 and 209.
Use in Mathematics: LCM of 7 and 209
The below are some of the mathematical applications where lcm of 7 and 209 can be used:
- to find the least number which is exactly divisible by 7 and 209.
- to find the common denominator for two fractions having 7 and 209 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 7 and 209 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 7 seconds and bell B tolls at 209 seconds repeatedly. The answer is that all bells A and B toll together at 1463 seconds for the first time, at 2926 seconds for the second time, at 4389 seconds for the third time and so on.
Important Notes: 7 and 209 lcm
The below are the important notes to be remembered while solving the lcm of 7 and 209:
- The common prime factors and the remaining prime factors of 7 and 209 should be multiplied to find the least common multiple of 7 and 209, when solving lcm by using prime factors method.
- The results of lcm of 7 and 209, and the lcm of 209 and 7 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 7 and 209?
The below solved example with step by step work shows how to find what is the lcm of 7 and 209 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 7 and 209?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 7
B = 209
What to be found:
find the lcm of 7 and 209
step 2 Find the prime factors of 7 and 209:
Prime factors of 7 = 7
Prime factors of 209 = 11 x 19
step 3Identify the repeated and non-repeated prime factors of 7 and 209:
Since there is no common factors between 7 and 209, multiplying the given numbers directly provides the LCM of
7 and 209.
= 7 x 209
= 1463
lcm(7 and 209) = 1463
Hence,
lcm of 7 and 209 is 1463
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 7 and 209.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 7 and 209
What to be found:
lcm (7, 209) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
7 and 209
step 3 Choose the divisor which divides each or most of the given integers (7 and 209), 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 7 and 209 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 7 | 7 | 209 |
| 11 | 1 | 209 |
| 19 | 1 | 19 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 7 and 209:
= 7 x 11 x 19
= 1463
LCM(7, 209) = 1463
The LCM of two numbers 7 and 209 is 1463