Question

what is the LCM of 14, 20 & 21?​

Answer 1

problem & Workout :

step 1 Address input parameters & values.

Integers: 14 20 30

lcm (14, 20, 30) = ?

step 2 Arrange the group of numbers in the horizontal form with space or comma separated format

14, 20 and 30

step 3 Choose the divisor which divides each or most of the integers of in the group (14, 20 and 30), 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 the integer is not divisible by the divisor. Repeat the same process until all the integers are brought to 1.

LCM of 14, 20 and 30

2 14 20 30

7 7 10 15

5 1 10 15

3 1 2 3

2 1 2 1

1 1 1

step 4 Multiply the divisors to find the lcm of 14, 20 and 30

2 x 7 x 5 x 3 x 2 = 420

LCM(14, 20, 30) = 420

The least common multiple for three numbers 14, 20 and 30 is 420