# How do you solve the equation 3x+16=31?

Mar 14, 2018

$x = 5$

#### Explanation:

Given -

$3 x + 16 = 31$

Add $- 16$ to both sides

$3 x + 16 - 16 = 31 - 16$

$3 x \cancel{+ 16} \cancel{- 16} = 15$

$3 x = 15$

Divide both sides by $3$

$\frac{3 x}{3} = \frac{15}{3}$

$\frac{\cancel{3} x}{\cancel{3}} = 5$

$x = 5$