# How do you simplify -14 - 21 ?

Apr 7, 2017

$- 14 - 21 = - 14 + \left(- 21\right) = - 35$

Apr 7, 2017

$- 35$

#### Explanation:

• Using directions on the number line:

A negative number means you are moving to the LEFT, going DOWN the number line.

$- 14 - 21$ can be read as as

"Go $14$ to the left and then another $21$ to the left"

Altogether this will be $35$ to the LEFT, giving $- 35$

• Negative numbers can also be considered as debts:
You have borrowed money which needs to be repaid.

Read this as "I borrowed $14 and then another$21"
Altogether I have borrowed $35. You can write this as an ADDITION of two negative numbers: $\left(- 14\right) + \left(- 21\right) = - 35\$