# How do you simplify 7x+3x?

May 29, 2018

$10 x$

#### Explanation:

In algebra you can only add like terms.

$7 x + 3 x$ can be written as:

$x + x + x + x + x + x + x \text{ } + x + x + x$

As they are all terms in $x$ we can simply ask how many $x$s are being added altogether.?

There are seven $x$s and another three $x$s.

They are all like terms which gives:

$7 x + 3 x = 10 x$