Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

20
Lesson 7-1 Pages 330-333 Solving Equations with Variables on

Transcript of Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Page 1: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Lesson 7-1 Pages 330-333

Solving Equations with Variables on

Each Side

Page 2: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

What you will learn!How to solve equations with variables on each side.

Page 3: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.
Page 4: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

What you really need to know!

To solve equations with variables on each side, use the Addition or Subtraction Property of Equality to write an equivalent equation with the variable on one side. Then solve the equation.

Page 5: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Link to Pre-Made Lesson

Page 6: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Example 1: Solve:

5x5x ++ 1212 == 2x2x-5x-5x -5x-5x

1212 == -3x-3x-3-3 -3-3-4-4 == xx

Page 7: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

5x5x ++ 1212 == 2x2x-2x-2x -2x-2x3x3x ++ 1212 == 00

-12-12 -12-123x3x == -12-1233 33xx == -4-4

Page 8: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Example 2: Solve:

7x7x ++ 33 == 2x2x ++ 2323-2x-2x -2x-2x5x5x ++ 33 == 2323

-3-3 -3-35x5x == 202055 55xx == 44

Page 9: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Example 2b: Solve:

1.71.7 ++ aa == 2.5a2.5a −− 4.94.9-a-a -a-a

1.71.7 == 1.5a1.5a −− 4.94.9+4.9+4.9 ++ 4.94.9

6.66.6 == 1.5a1.5a1.51.5 1.51.54.44.4 == aa

Page 10: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Example 3:

A car rental agency has two plans. Under plan A, a car rents for $80 plus $20 each day. Under plan B, a car rents for $120 plus $15 each day. What number of days results in the same costs?80 + 20d = 120 + 15d

Page 11: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Example 2b: Solve:

8080 ++ 20d20d == 121200 ++ 15d15d

-15d-15d -15d-15d8080 ++ 5d5d == 1212

00-80-80 -80-80

5d5d == 404055 55dd == 88

Same for 8 days

Page 12: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Page 332

Guided Practice

#’s 3-9

Page 13: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.
Page 14: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Pages 330-331 with someone at home and

study examples!

Read:

Page 15: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Homework: Pages 332-333

#’s 10-36 even

#’s 39-40, 42-53

PA Lesson Check 7-1

Page 16: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.
Page 17: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.
Page 18: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.
Page 19: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

Page

739

Lesson 7-1

Page 20: Lesson 7-1 Pages 330-333 Solving Equations with Variables on Each Side.

PA Lesson Check 7-1