### Home > CC2 > Chapter Ch5 > Lesson 5.3.3 > Problem5-125

5-125.

Simplify the following variable expressions.

1. $2x+5+x-6+3x$

Combine like terms.

$2x$, $x$, and $3x$ are like terms because they share the variable $x$ to the same power.
$5$ and $−6$ are like terms because they are both constants.

$2x+x+3x=6x$ and $5+-6=-1$

$6x-1$

1. $x-8+x−5+x+1$

See part (a).