# How do you simplify 12m + 9 - 2m - 16?

Sep 20, 2015

10m-7

#### Explanation:

Apples with apples, oranges with oranges.
Here the apples are $m$ and the oranges are the "numbers".
Group the $m$ together and the numbers together
$12 m + 9 - 2 m - 16 = 12 m - 2 m + 9 - 16$
then perform calculation:
$= 10 m - 7$