## Pre-Algebra Tutorial

*One-Step Equation*

#### Intro

Solving a One-Step equation is to find the solution for an unknown.

#### Sample Problem

**Use the following information to answer the question below.**

John buys a box of chocolate for $3.50, and a snicker. if the total he spent was $4.25, how much did he pay for the snicker?

#### Solution

Let the unknown (snicker) be X:

Step 1: Write an equation

Step 2: Equation form $3.50 + X (snicker) = $4.25

Step 3: Keep unknown by itself and remove number to the other side. To do so, perform the reverse operation to remove number and transpose it to the other side of the equation.

$3.50 – $3.50 + X = $4.25 – $3.50 (Whatever is done on one side of the equation is also done to the other side, hence subtracting $3.50 from both sides of the equation.

Step 4: X = $4.25 – $3.50

X = $0.75

So one snicker costs $0.75

# About The Author

Prefer Teaching From 3rd Grade Of Elementary To 10 |

I have been a high school teacher (grades 9-11) for more than fifteen years, and a math tutor for nine years. I love to work with students who have difficulties functioning in a large classroom setting or simply struggle to grasp concepts and math principles. I employ creative strategies to help stu... |