Ch. 6 Lesson 1,2,3, & 4Rotations

One Step Equations

100

17+m= 56

Use Subtraction Property of Equality

m = 39

200

-12x=36

Use Division Property of Equality

x = -3

300

Tiffany practiced the violin for 28 minutes. She practiced 10 minutes less than her brother did. Write and solve an equation to determine how long her brother practiced the violin.

Equation: b-10=28

Answer: b = 38

Two Step Equations

100

2x+12=24

Undo addition or subtraction then undo multiplication or division

x = 6

200

5y-26=14

Undo addition or subtraction then undo multiplication or division

y=8

300

Jamil's cell phone plan costs $29 per month. Text messages cost an additional $0.05 each. If Jamil's cell phone bill last month totaled $45.09, write and solve an equation to determine how many text messages he sent?

.05m+29 = 45.10

m = 322

322 text messages

Equations with Rational Coefficients

100

16=.25n

n = 64

200

1/2 x = 6/8

x = 12/8 or simplified 3/2

300

Samantha answered

2/3

 of the questions on her science quiz correctly. If she answered 4 questions correctly, write and solve an equation to determine how many questions were on the quiz.

x = 6 

6 questions 

Equation: 

 2/3x=4