SOLUTION: How do I simplify the following: -2(4m+9n)+3mn I started by getting -8m+-18n+3mn. I'm not sure if I can add the m, n with the mn.

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: How do I simplify the following: -2(4m+9n)+3mn I started by getting -8m+-18n+3mn. I'm not sure if I can add the m, n with the mn.      Log On


   

Question 791527: How do I simplify the following:
-2(4m+9n)+3mn
I started by getting -8m+-18n+3mn.
I'm not sure if I can add the m, n with the mn.
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!

-8m-18n+3mn
that's as far as you can go
All three are different values, can't combine