SOLUTION: How would I factor this? a)3cm -12dm +nc -4dn

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Question 901102: How would I factor this?
a)3cm -12dm +nc -4dn
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
How would I factor this?
a)3cm -12dm +nc -4dn
3m(c-4d)+n(c-4d)
(c-4d)(3m+n)