# Algebra 1 : How to solve two-step equations

## Example Questions

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### Example Question #531 : Linear Equations

Evaluate the expression (3x + 4y)3 when x = 4 and y = 2.

8000

343

2744

64

800

8000

Explanation:

Plug in 4 for x and 2 for y, giving you (3(4) + 4(2))3, which equals (20)3, equalling 8000.

(3x + 4y)3

(3(4) + 4(2))3

(12 + 8)3

(20)3 = 8000

### Example Question #2 : How To Solve Two Step Equations

Evaluate when x = 3.

–3

3

0

9

27

27

Explanation:

First plug 3 in for x, giving you . You square 6, giving you 36, then subtract (18/2), giving you 27.

### Example Question #3 : How To Solve Two Step Equations

Solve for .

Explanation:

Add 5 to each side of the equation.

Add 3x to each side of the equation.

Divide each side of the equation by 5.

### Example Question #1 : How To Solve Two Step Equations

Solve for .

Explanation:

Subtract 9 from both sides of the equation.

Divide each side of the equation by 3.

### Example Question #2 : How To Solve Two Step Equations

Solve for .

Explanation:

Add 11 to each side of the equation.

Multiply each side of the equation by .

Divide each side of the equation by 24.

Simplify

### Example Question #1 : How To Solve Two Step Equations

Solve for :

Explanation:

First, substract 3 from both sides:

Next, divide each side by 7:

Solve for x:

Explanation:

Solve for :

Explanation:

### Example Question #4 : How To Solve Two Step Equations

Solve for

Explanation:

First subtract 4 from both sides.  This gives .  Then divide both sides by 4 to get

Solve for :