Math 012 Help
posted by WVSU on .
I need help with this problem. I have to use the distributie property to write the expression without parantheses, then simplify if possible. It's been awhile since ive done this and I think i will understand once I see how it is written out. Thanks to anyone who replies.
Amy
4(12m+n)+4

Multiply everything in the ( ) by 4.
4+8m4n + 4
Note the sign changes
Now gather terms. Check me
8m4n 
you have to bring the 4 into each number that is in the parenthesis by multiplication.
so you do 4 x 1, 4 x 2m, and 4 x n
you should get 4 + 8m  4n
then add on the 4 at the end so you get
4 + 8m 4n + 4
it simplifies to 8m  4n since the positive and negative fours cancel
post back if u don't understand