1. Solving an equation with negative coefficients: EXAMPLE 1 EXAMPLE 2
Ch. 3.1 continued
Solving an equation with negative coefficients:
EXAMPLE EXAMPLE 2
Solve: 7 – 4y = Solve 12 – 4s = -12
7 – 4y = s = -12
-4y = s = -24
y = s = 6

2. EXAMPLE 3
5 – X = 198

3. EXAMPLE 3
-4 + 3m = 29
3m = 33
m = 11

4. Practice on your own!
6 – 2m = 8

5. -2 = 5 - n

6. 20 – 12m = 44

7. – 2y + 11 = 31

8. What is the important information?
Word problems involving two-step equations
You are buying a drum set that costs $495. The music store lets you make a down payment. You can pay the remaining cost in three equal monthly payments with no interest charged. You make a down payment of $150. How much is each monthly payment?
Set up your equation:
p = 495
Solve:
3p = 345
p = 115
What is the important information?
Costs $495
Down payment of $150
I have 3 months to pay remaining amount ($495 - $150)

9. Word problems involving two-step equations
You go to a local candy store to purchase some rock candy and chocolate bars. You have a total of $5 in your pocket to spend. If you purchase one bag of rock candy for $1.75, how many chocolate bars can you purchase if each chocolate bar costs $1.50?

10. Homework
Page 123 #’s 5-6, 15-22, 28, 32-33, 46