warm-up 1. solve the equation: 3.evaluate when m = 1/5a. 15m + 4 b. 3/m 4.combine like termsa. 2a...

10
Warm-Up 1. Solve the equation: 3. Evaluate when m = 1/5 a. 15m + 4 b. 3/m 4. Combine like terms a. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 - 3) 2 - 8 5n + 11 = 7n – 9

Upload: amos-singleton

Post on 17-Jan-2016

216 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Warm-Up1. Solve the equation:

3. Evaluate when m = 1/5 a. 15m + 4

b. 3/m

4. Combine like terms a. 2a – 3(a + 2) + 5a

2. Evaluate the expression: 18 ÷ (6 - 3)2 - 8

5n + 11 = 7n – 9

Page 2: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Yesterday’s closing:

Write: I will turn in my warm-ups and closings on Friday at the end of class to the appropriate tray whether Mrs. Williams

asks for them or not.

Page 3: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

2x + 3 = 15

An equation has 2 sides: a left side and a right side

** The left side is equivalent to the right side

Page 4: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

The goal is to isolate the variable.

We did this previously, but we did not justify the steps we took.

Today we will review solving multistep equations including properties of equality to justify our steps.

Page 5: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Properties of Equality

Page 6: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Complete the Algebraic Properties Worksheet (front & back)You have 20 minutes. We will work 10

minutes silently, and then for 10 minutes you may collaborate with your classmates to

identify solutions.

Page 7: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Take out the Solve Equations and Justify Worksheet you picked up on the way in to class.

Page 8: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -
Page 9: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Complete the remainder of the Solve Equations and Justify Worksheet.

You will have a short quiz as your ticket out the door.

Page 10: Warm-Up 1. Solve the equation: 3.Evaluate when m = 1/5a. 15m + 4 b. 3/m 4.Combine like termsa. 2a – 3(a + 2) + 5a 2. Evaluate the expression: 18 ÷ (6 -

Closing & Homework:

Closing: You will have a quiz Monday over the Properties of Equality. What will you do to memorize them between now and then?

HW: Complete pages 49 – 50 in your Explorations in Core Math Workbook