2 Step Equations Review

1 Step Equations

100

x + 7 = 15

x = 8

200

y - 9 = 4

y = 13

300

6a = -42

a = -7

400

b/5 = -8

b = -40

500

3.5x = 350

x = 100

2 Step Equations (simple)

100

3x + 5 =20

x = 5

200

2y - 4 = 12

y = 8

300

2a - 11 = 9

a = 10

400

m/4 + 6 = 11

m = 20

500

9p + 10 = 91

p = 9

2 Step Equations (advanced)

100

(a + 5)/ 7 = 5 

a = 30

200

(20 + r)/4 = 7

r = 8

300

1/2 x + 5 = 8 

x = 3

400

7(w - 3) = 49

w = 10

500

-3(x + 5) = -36

x = 7

Writing Equations

100

Liam has $18. He buys 3 coffees. Afterwards, he has $7 left. Write an equation to represent this problem. 

18 = 7 + 3x 

OR 

7 = 18 - 3x 

200

Amaya rents out bikes from her store. She charges $12 per bike plus $5 per hour. It costs Jett $42 to rent a bike. Write an equation to represent this situation. 

42 = 12 + 5x 

300

River won 38 pieces of candy from Mr. Schmid for having the best World's Fair project. On his way to Finance class, River gives 2 pieces of candy to each friend. By 2nd period, River only has 6 pieces left. How many friends does River have? Write an equation to represent this situation. 

38 - 2f = 6

OR 

6 + 2f = 38

400

Brooke sold half of her CDs. Then, she bought 67 more. She now has 100 CDs. How many did she originally have?

x/2 + 67 = 100

500

The sum of 3 consecutive numbers is 66. What is the smallest of these numbers?

x + x + 1 + x + 2 = 66

3x + 3 = 66