September 18, 2012Solving Multi-Step Equations

Warm-up:Compare HW answers and write problems you don’t understand up on the board.

Reviewing Solving One-Step EquationsIsolating x

Solve and describe each step. Then check your answer.

1. x + 16 = -13 2. 28 = x – (-13)

3. -10 = -35x 4.5.

x

318

2

3x 8

Lesson 2.3 Solving Multi-Step Equations

So we can now solve: x – 4 = -16And, we can solve: -2x = 16

Solve: 2x – 4 = -16Steps to Solve

• Can we simplify?

• What side is “x” on?

• Add/Subtract

• Multiply or Divide

Check your answer!

More examples…

Example 1:3(2x – 5) = -8

Steps to Solve

• Can we simplify?

• What side is “x” on?

• Add/Subtract

• Multiply or Divide

Try these and don’t forget the steps!

1. 20 = 3x + 25

2. -5x – 22 = -7

3.

4.

5. -3 = 8x – 2x +15

7104

x

2232

5b

Steps to Solve

• Can we simplify?

• What side is “x” on?

• Add/Subtract

• Multiply or Divide

Make a Review Sheet

Pick 6 problems from your textbook, PG. 146 #22-42 .

Solve and check your answers.

Then switch your review with another student.