torigyrl1142 torigyrl1142
  • 24-01-2018
  • Mathematics
contestada

Factor out the gcf. use the distributive property to write an equivalent expression for 9d-18f

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jimthompson5910 jimthompson5910
  • 24-01-2018
The GCF of 9d and -18f is the value 9
This is because 9 is the largest factor that goes into 9d and -18f

We can factor each part like so
9d = 9*d
-18f = 9*(-2f)

allowing us to say...
9d - 18f = 9*d + 9*(-2f)
9d - 18f = 9(d-2f)
If we use the distributive property to distribute the 9 through to (d-2f), we end up with 9d-18f again. This is a good way to check the answer

Answer: 9(d-2f)
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