Question

Solve for
5(2 – 8) = 20

Answer 1

Explanation:

5x - 40 = 20

5x = 20 + 40

5x = 60

x = 60/5

x = 12

Answer 2

x = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Equality Properties

Explanation:

Step 1: Define equation

5(x - 8) = 20

Step 2: Solve for x

1. Divide 5 on both sides: x - 8 = 4
2. Add 8 on both sides: x = 12

Step 3: Check

Plug in x into the original equation to verify it's a solution.

1. Substitute in x: 5(12 - 8) = 20
2. Subtract: 5(4) = 20
3. Multiply: 20 = 20

Here we see that 20 does indeed equal 20.

∴ x = 12 is a solution to the equation.