Question

3x - 7 = 29
What is x

Answer 1

x = 12

General Formulas and Concepts:

Pre-Algebra

• Order of Operations: BPEMDAS
• Equality Properties

Explanation:

Step 1: Define equation

3x - 7 = 29

Step 2: Solve for x

1. Add 7 on both sides: 3x = 36
2. Divide 3 on both sides: x = 12

Step 3: Check

Plug in x to verify it's a solution.

1. Substitute: 3(12) - 7 = 29
2. Multiply: 36 - 7 = 29
3. Subtract: 29 = 29

Here we see that 29 does indeed equal 29.

∴ x = 12 is a solution of the equation.