# How do you solve and write the following in interval notation: -4<a + 2<10?

Jul 14, 2016

a in ]-6,8[

#### Explanation:

you can subtract 2 to all terms:

$- 6 < a < 8$

Jul 14, 2016

$- 6 < a < 8$; $\left(- 6 , 8\right)$

#### Explanation:

Subtract two.

$- 4 < a + 2 < 10$

$- 4 - 2 < a + 2 - 2 < 10 - 2$

$- 6 < a < 8$

Interval Notation:

$\left(- 6 , 8\right)$

Parenthesis do not include values, and brackets include the values they cover in interval notation.