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| I going to fail math for not knowing about greatest common factors. | |
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| I know how to do that. I'll show you. | |
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| All you do is see whatever number you have like if you had 21 and 14, you'd look for the common number. Or just see what they're multiplied by. | |
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| Okay. The numbers 14 and 21 their G.C.F. would be 7. | |
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| Yes. That's what you'll do with the numbers to get your greatest common factor. | |
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