Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

How do you add 2x + -5x?

1 Answer

Sep 25, 2015

$(2 x) + (- 5 x) = - 3 x$ $(2x) + (-5x) = color(green)( -3x$

Explanation:

The variable $x$ $x$ is common to both the terms. So taking the common factor out, we get:

$(2 x) + (- 5 x) = x \cdot {2 + (- 5)}$ $(2x) + (-5x) = x*{2+(-5)}$

$= x \cdot {2 - 5}$ $= x*{2-5}$

$= x \cdot (- 3)$ $= x*(-3)$

$= - 3 x$ $=color(green)( -3x$

Related questions

See all questions in Variable Expressions

Impact of this question

1798 views around the world

You can reuse this answer
Creative Commons License