Variables on both sides of the equations day 2

8.ee.7

Essential Question: How do start solving an equation with multiple steps? When do I know I am finished?

My Goal For Today :_____________________ to solve equations with variables on both sides.

Two step equations

15 – 3x = -6

6z – 2 = 0

9t + 12 = 75

9 = -5g – 23

6y + 3 = -27

4y + 1 = -15

Equations

Solution

Constant

Co-Efficient

PEMDAS Solve Equations with Variables on both sides

Review the notes on variables on both sides of the equation

1. Combine like terms or use distributive property.

2. Add or subtract variable terms to both sides so that the variable occurs on only one side of the equation.

3. Then use properties of equality to isolate the variable.

Solve each equations.

Guided Practice

Solve each equations.

Examples on your own:

W

12(b + 2) = 9(b - 2) + 9b

A. -2B. 9C. 7D. -8

[Default][MC Any][MC All]

[Enter question here]

A. 1B. -10C. 5D. -14

[Default][MC Any][MC All]

Solve each equation.

Think-Pair-Share

A1 Plumbing Service charges $35 per hour plus a $25 travel charge for a service call. Good Guys Plumbing Repair charges $40 per hour for a service call with no travel charge. How long must a service call be for the two companies to charge the same amount?

Mike’s Fitness Center charges $30 per month for a membership. All-Day Fitness Club charges $22 per month plus an $80 initiation fee for amembership. After how many months will the total amount paid to the two fitness clubs be the same?

Exit Slip

Solve the equation.