# How do you solve 10(1+3b)=-20?

Apr 23, 2018

$b = - \frac{1}{3}$

#### Explanation:

divide both sides by 10
$\implies$$1 + 3 b = - 2$

$\implies$ $3 b = - 1$
$\implies$ $b = - \frac{1}{3}$
$\implies$ $10 + 30 b = - 20$
$\implies$ $30 b = 10$
$\implies$ $b = - \frac{1}{3}$