LCM for 7 and 49

The first method to find LCM for numbers 7 and 49 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 7 and 49 is 7, so

LCM = (7 × 49) ÷ 7

LCM = 343 ÷ 7

LCM = 49

The second method to find LCM for numbers 7 and 49 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63

Multiples of 49: 49, 98, 147, 196, 245, 294, 343, 392, 441, [...], 49

So the LCM for 7 and 49 is 49

Another method to find LCM for numbers 7 and 49 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: