1 / 8

2.5 Solving Two-Step Equations

2.5 Solving Two-Step Equations. I can solve two-step equations by using inverse operations. Requires 2 steps to solve. Involves 2 operations Uses properties of equality and inverse operations to solve. Isolate the variable. Ex:. What is a two-step equation?.

ismael
Download Presentation

2.5 Solving Two-Step Equations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 2.5 Solving Two-Step Equations I can solve two-step equations by using inverse operations.

  2. Requires 2 steps to solve. • Involves 2 operations • Uses properties of equality and inverse operations to solve. • Isolate the variable. • Ex: What is a two-step equation?

  3. Suppose you are ordering roses. Roses cost $5 each and shipping costs $10. Your cost depends on how many roses you buy. • Define your variables • Let r be the number of roses • Shipping is only paid once • 10 + 5r • How many roses did you buy if you spend $70? • 10 + 5r = 70 Writing a two-step equation

  4. Identify operations • Use inverse operations to “undo” them • Undo operations in reverse order • Ex: 2x+3 = 15 • Multiplication and addition • Undo • Subtract 3: 2x = 12 • Divide by 2: x = 6 • Solution: x = 6 How to Solve

  5. Operations • Subtraction and division • Undo • Multiply by 3: x – 7 = -36 • Add 7: -29 • Solution: x = -29 Solving with 2 Terms in the Numerator

  6. -t + 8 = 3 • t = 5 • a = 12 • x = 26 Practice

  7. An advertisement for community service opportunities uses half a sheet of paper per ad and 5 sheets for a title banner. If you have 18 sheets, how many ads can be made? • What do we know? • What are we looking for? • Write an equation. • Solve. • a = 26 Using an Equation as a Model

  8. ODDS ONLY • P.83 #5-37 Assignment

More Related