# How do you solve x+3=8?

Jul 23, 2016

color(purple)("x=5

#### Explanation:

$\textcolor{p u r p \le}{\text{Subtract 3 on both sides of the equation. This will allow you to}}$ color(purple)("get the variable (a letter that takes the place of an unknown" $\textcolor{p u r p \le}{\text{number) and the constant (a number) by themselves so you can solve for x:}}$

$x \cancel{+} 3 = 8$
$\textcolor{w h i t e}{a a} \cancel{-} 3 - 3$

Now, on the left side you are just left with $x$ since 3+(-3) = 0. On the right side you end up with 5 because 8-3 =5.

Thus,

color(blue)("x=5