# How do you combine 7( a + 2b ) - 6b + 2a ?

Oct 7, 2017

$9 a + 8 b$

#### Explanation:

$7 \left(a + 2 b\right) - 6 b + 2 a = 7 a + 14 b - 6 b + 2 a$
$= \left(7 a + 2 a\right) b \left(14 - 6\right) = 9 a + 8 b$

Oct 7, 2017

$9 a + 8 b$

#### Explanation:

Multiply through parenthesis by 7
$7 a + 14 b - 6 b + 2 a$
Collect the like terms
$9 a + 8 b$