How to Solve Single-Variable Linear Equations

Keep in mind that your equation should be in the form ax + b = c. The goal is to solve for x.

Difficulty:

Moderately Easy

Instructions

Things You'll Need

• Calculators
• Desk Lamps
• Pencils
• Erasers
• Notebook Papers

1. Isolate the variable. Begin by subtracting b from both sides of the equation.

2. Look at your new equation. It should now be in the form ax = c - b.

3. Solve for x by dividing both sides by a.

4. Congratulate yourself if your expression is now in the form x = (c - b)/a. You have solved the expression for x.

Tips & Warnings

• Example: 3x + 6 = 12. Subtract 6 from both sides: 3x = 6. Divide both sides by 3 to determine that x = 2.