Use with Lesson 2MAFS.8.EE.3.7b

Course 3, Lesson 2-2Mathematics Florida Standards – Mathematics, numbering and wording from www.cpalms.org.

Solve each equation. Check your solution.

1. = 6

2. 0.6y = −12

3. =

4. 8.6n = −365.5

5. For art class, each student is going to make a piñata using

pound of paste. The art teacher bought 20 pounds of

paste. Write and solve an equation that can be used to

determine the number of students that can make a piñata.

4

5

3

4n

12

2x

122

2

ANSWERS

1. 8

2. −20

3. 9

4. −42.5

5. ; n = 25

Course 3, Lesson 2-2Mathematics Florida Standards – Mathematics, numbering and wording from www.cpalms.org.

Use with Lesson 2MAFS.8.EE.3.7b

420

5n

WHAT is equivalence?

Course 3, Lesson 2-2

• MAFS.8.EE.3.7Solve linear equations in one variable.

• MAFS.8.EE.3.7aGive examples of linear equations in one variable with one solution, infinitely many solutions, or no solutions. Show which of these possibilities is the case by successively transforming the given equation into simpler forms, until an equivalent equation of the form x = a, a = a, or a = b results (where a and b are different numbers).

• MAFS.8.EE.3.7bSolve linear equations with rational number coefficients, including equations whose solutions require expanding expressions using the distributive property and collecting like terms.

Course 3, Lesson 2-2Mathematics Florida Standards – Mathematics, numbering and wording from www.cpalms.org.

Mathematical Practices

MP1 Make sense of problems and persevere in solving them.

MP2 Reason abstractly and quantitatively.

MP3 Construct viable arguments and critique the reasoning of others.

MP4 Model with mathematics.

Course 3, Lesson 2-2Mathematics Florida Standards – Mathematics, numbering and wording from www.cpalms.org.

To•identify the Properties of Equality,•solve two-step equations

Course 3, Lesson 2-2

• properties• two-step equation

Course 3, Lesson 2-2

Course 3, Lesson 2-2

WHAT is equivalence?

Sample answers:• In order to maintain the equality, when you perform an

operation on one side of an equation, you must perform the same operation on the other side of the equation.

• Equations are equivalent when they have the same solution.

Course 3, Lesson 2-2

WHAT is equivalence?

Write a two-step equation and explain how to solve it.

Course 3, Lesson 2-2