Lesson 2.2

Lesson 2.2: Solving One-Step Equations

In this lesson, we will learn to solve one-step equations using addition, subtraction, multiplication, and division!

Lets learn the basics on solving equations!

• Solving an equation means finding the value of the variable to make the equation true

• By assuming that every equation has a solution, isolate the variable by adding, subtracting, multiplying, and dividing

• While checking your answer, you should get an equivalent equation

Poll

Do YOU understand the basic process of writing and solving a one-step equation?

• Yes

• No

• Kinda!

1) 44= 6j-14

• Step 1: Identify the variable, solve for j

• Step 2: Isolate the variable on one side (48=6j)

• Step 3: Solve (8=j)

• Answer: j has a value of 8!

2) 3/5q=-15

1) 3/5q=15

• (5/3)3/5q=-15(5/3)
• q=25
• q has a value of 25

Great Job!

Multiple Choice

Solve:

 $\frac{x}{-4}$  = 9

• 13

• 36

• -36

•  $\frac{-4}{9}$  

Multiple Choice

Which equation has x = 5 as the solution?

• x + 15 = 10
• 2x = 5
• 2x = 10

Multiple Choice

y-37=79 (Solve for y!)

• y= -116

• y=116

• y=42

• y=543

Real-World Problem: Buying Clothes

Mr.Karatz went shopping for a tie. He decided to shop at a eco-friendly store that donated 7/8 of its proceeds to saving the ocean. If his tie costed $26, how much money went to save the ocean?

Solving the problem!

• 7/8x=26 (your equation)

• x=$22.75

• The tie shop donated $22.75 to saving the ocean!

• #SaveTheOcean!!

Ending!

You have completed the lesson 2.2 study review. Congratulations!