# What is the solution to 16=a-4.2?

##### 1 Answer
Dec 26, 2016

$a = 20.2$

#### Explanation:

To solve this problem we need to add $\textcolor{red}{4.2}$ to each side of the equation to determine $a$ and keep the equation balanced:

$16 + \textcolor{red}{4.2} = a - 4.2 + \textcolor{red}{4.2}$

$20.2 = a - 0$

$20.2 = a$

or

$a = 20.2$