# How do you combine like terms for #-7mn-2mn^2-2mn + 8#?

##### 1 Answer

Dec 24, 2014

In this expression only the first

The second term

Imagine that like terms are objects. You can add or subtract together the same objects (for example 5 apples+2 apples= 7 apples) while you CANNOT do it with different objects (for example: 3 apples + 5 chairs=???)

In your case you can now write: