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Q: How can you get 72 by using 12 2 and8?

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60 5*12=60 5*2*6=60 5*2*2*3=60 72 6*12=72 6*2*6=72 6*2*2*3=72 GCF=12

72 = 12 * 6= 12 * 3 * 2= 2 * 6 * 3 * 2= 2 * 2 * 3 * 3 * 2So 72 = 23*32.

Since 12 is a factor of 72, it automatically has to be the GCF. 2 x 2 x 3 = 12 2 x 2 x 2 x 3 x 3 = 72 Select the common factors. 2 x 2 x 3 = 12, the GCF

The GCF is 2.

8 is.

2

As factors, 1 and 2.

2

72

72/3=24/2=12/3=4/2=2/2=1 3 x 2 x 2 x 2 x3

The LCM is: 8

2 * 3 * 12 = 72

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