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Solving Equations

100

Solve for x: 

x+5=12

x=7

200

Solve for Y: 

Y-8=2

Y=10

300

Solve for Z: 

3z=15

Z=5

400

Solve for a:

a/4=7

a=28

500

Solve for b: 

2b+5=11

b=3

Writing Equations

100

Write an equation to represent: 

"Three times a number n is equal to 21"

3n=21

200

Write an equation to represent: 

"A number x increased by 7 is equal to 15"

x+7=15

300

Write an equation to represent: 

"The quotient of a number b and 6 is equal to 4"

b/6=4

400

Write an equation to represent: 

"The product of a number k and 7 is equal to 21"

7k=21

500

Write an equation to represent: 

"Two times a number, p, minus 3, is equal to 9"

2p-3=9

WordProblems

100

John had x amount of marbles, and he lost 5. Now he has 7 marbles. How many marbles did he have? Write an equation to represent this situation

x-5=7

200

Jessica splits the total amount of cookies, c, that she has between her 4 friends. Each friend gets 3 cookies. Write an equation involving c to show how many cookies Jessica had. 

c/4= 3 

300

Tommy scored 16 points in a basketball game. His score was two-thirds of the number of points that Danny scored. Let n be the number of points that Danny scored. Write an equation involving n to determine Danny's points.  

(2/3)n = 16

400

Gregory signed up for a new streaming service. The service cost him $40.20 for 6 months. Let s be the price of a single month. Set up an equation using s and solve it for the price of a single month. 

6s = $40.20 

s = 6.7

500

Barbara is sorting her book collection into shelves that hold 5 books each. She fills 8 shelves with books. Let b be the total number of books Barbara has. Write an equation involving b and solve it for the total number of books Barbara has. 

b/5 = 8 

b=40