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To get the Greates Common Factor (GCF) of 835 and 630 we need to factor each value first and then we choose all the copies of factors and multiply them:
|835: || || || ||5|| ||167|
|630: ||2||3||3||5||7|| |
|GCF: || || || ||5|| || |
The Greates Common Factor (GCF) is: 5