Big Ideas Math: Modeling Real Life, Grade 7
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Exercise 7 Page 120

Remember, only like terms can be combined.

- 8+6n

Before we try to simplify the given expression, let's use the Distributive Property so that we can get rid of the parentheses. This will also let us see the correct coefficients for any terms with variables.
-2(4-3n)
- 2(4)+(-2)(-3n)
- 8+(-2)(-3n)
- 8+6n
The next step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like termsconstant terms or terms with the same variable — can be combined. - 8 + 6n In this case, we have one n-term and one constant. This means that we cannot rearrange our expression further.