How do you solve x+3=8?

1 Answer
Jul 23, 2016

color(purple)("x=5

Explanation:

color(purple)("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" color(purple)("number) and the constant (a number) by themselves so you can solve for x:")

xcancel+3=8
color(white)(aa)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