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To get the Greates Common Factor (GCF) of 6840 and 132600 we need to factor each value first and then we choose all the copies of factors and multiply them:
|6840: ||2||2||2||3||3||5|| || || ||19|
|132600: ||2||2||2||3|| ||5||5||13||17|| |
|GCF: ||2||2||2||3|| ||5|| || || || |
The Greates Common Factor (GCF) is: 2 x 2 x 2 x 3 x 5 = 120