0
Upcoming SlideShare
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Standard text messaging rates apply

# 3 2 Solving Linear Equations

271

Published on

Published in: Education, Technology
0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total Views
271
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
13
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Transcript

• 1. To solve an equation is to isolate the variable.
• 2. To isolate the variable means to get it alone on one side of the equation.
• 3. Given the equation,how do we isolate the x? x =4 7
• 4. What number has to move to leave x alone on one side of the equation? x =4 7
• 5. What number has to move to leave x alone on one side of the equation? x =4 7
• 6. If we couldmove the seven, x =4 7
• 7. If we could move the seven,the x would be isolated. x =4 77 77 77 77
• 8. The next question is,how can we move the 7? x =4 7
• 9. What is the sevendoing in the equation? x =4 7
• 10. What operationundoes division? x =4 7
• 11. To move the 7, we just need to multiplyboth sides of the equation by 7. x =4 7
• 12. Remember . . . when you do somethingto one side of an equation x 7 &#x22C5; =4 7
• 13. you have to do exactly the same thing to the other side. x 7 &#x22C5; =4 &#x22C5; 7 7
• 14. When we simplify, x 7 &#x22C5; =4 &#x22C5; 7 7
• 15. When we simplify,we will have our solution. x = 28
• 16. To solve equationsthat involve multiplication you divide, 3a = 15 3 3
• 17. To solve equationsthat involve multiplication you divide, a=5
• 18. and to solve equations that involve division you multiply. b 9 &#x22C5; = &#x2212;2 &#x22C5; 9 9
• 19. and to solve equations that involve division you multiply. b = &#x2212;18
• 20. When Val works at the zoo on Saturday, she earns \$10.80 perhour. She also is paid \$8 for meals and \$3 for transportation.Last Saturday she received \$83.90. How many hours did shework??Ms. Toshio bought gas for \$2.39 per gallon and a drink for\$1.50. The total bill was \$31.15 before sales tax. How manygallons of gas did she buy??Bena lives in Delaware, where there is no sales or meals tax.She bought three chicken sandwiches with a \$10 bill andreceived \$1.45 change. What was the price of one sandwich??