LCM for 70 and 98

The first method to find LCM for numbers 70 and 98 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 70 and 98 is 14, so

LCM = (70 × 98) ÷ 14

LCM = 6860 ÷ 14

LCM = 490

The second method to find LCM for numbers 70 and 98 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 70: 70, 140, 210, 280, 350, 420, 490, 560, 630

Multiples of 98: 98, 196, 294, 392, 490, 588, 686

So the LCM for 70 and 98 is 490

Another method to find LCM for numbers 70 and 98 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: