# How do you solve -2.5x+18-1.6x=5.7?

Jul 29, 2016

Combine like terms, then solve for $x$.

#### Explanation:

You'll know when two or more terms are like terms because they contain the same variable. In this case, $- 2.5 x$ and $- 1.6 x$ are like terms, so let's combine them to get this:

$- 4.1 x + 18 = 5.7$

To get our answer, let's subtract 18 from each side...

$- 4.1 x = - 12.3$

...and let's divide each side by -4.1:

$x = 3$