Solving for a Variable

Combining Variables

Example 8

Solve 8x - 1 = 23 - 4x

Step 1. Use inverse functions to move like terms to the same side of the equation. Add 4x to both sides and simplify.

Solve_ex8_1

Step 2. Add 1 to both sides of the resulting equation and simplify.

Solve_ex8_2

Step 3. Divide both sides of the resulting equation by 12 and simplify.

Solve_ex8_3

Step 4. Check the solution.