Question

find the LCM of 120 and 210

Answer 1

Answer:

LCM of 120 is 2 × 2 × 2 × 3 × 5

LCM of 210 is 2 × 3 × 5 × 7

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Answer 2

Answer:

LCM is the lowest common multiple. We find factors for both the numbers.

120 can be expressed as = 2x2x3x10

210 can be expressed as = 3x7x10

Now to find LCM, we take the common factors once which are 3x10=30

Now we have to take all the balance numbers and lastly multiply by 30.

therefore LCM = 2x2x7 x 30

Solving this= 28x30= 840

Step-by-step explanation:

LCM of 120 and 210 by factor method comes as 840. hope it is helpful.