Find the GCF 15 , 40

Math
15 , 40
Find the common factors for the numerical part:
15,40
The factors for 15 are 1,3,5,15.
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The factors for 15 are all numbers between 1 and 15, which divide 15 evenly.
Check numbers between 1 and 15
Find the factor pairs of 15 where x⋅y=15.
xy11535
List the factors for 15.
1,3,5,15
1,3,5,15
The factors for 40 are 1,2,4,5,8,10,20,40.
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The factors for 40 are all numbers between 1 and 40, which divide 40 evenly.
Check numbers between 1 and 40
Find the factor pairs of 40 where x⋅y=40.
xy14022041058
List the factors for 40.
1,2,4,5,8,10,20,40
1,2,4,5,8,10,20,40
List all the factors for 15,40 to find the common factors.
15: 1,3,5,15
40: 1,2,4,5,8,10,20,40
The common factors for 15,40 are 1,5.
1,5
The GCF (HCF) of the numerical factors 1,5 is 5.
5
Find the GCF 15 , 40

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