Algebra 1 Easy Review

One Step Equations

100

s + 2 = 3

s = 1

200

-9 + m = 11

m = 20

300

-2x = -10

x = 5

400

y/5 = 2

y = 10

500

-r/4 = -0.5

r = 2

Two Step Equations

100

2x + 2 = 4

x = 1

200

-4k + 3 = -15

k = 3

300

-5d - 11 = -1

d = -2

400

y/2 + 4 = 6

y = 4

500

-w/0.5 + 1.25 = 3.50

w = -1.125

Proportions

100

4/3 = q/6

Solve for q

q = 8

200

2/10 = 4/(b+5)

Solve for b

b = 15

300

25/(w+2) = 5/3

Solve for w

w = 13

400

5/2 = (y-8)/(y-2)

Solve for y

y = -2

500

(2k-1)/5 = (3k+1)/10

Solve for k

k = 3

Literal Equations

100

A = LW 

Solve for W

W = A/L

200

I = prt

Solve for t

t = I/pr

300

D = m/v

Solve for m

m = DV

400

y = mx + b

Solve for x

x = (y - b)/m

500

a = (b + c)/d

Solve for b

Word Problems >:)

100

Lorenzo has $465 dollars. He gives all 15 of his classmates an equal amount of money. How much money does each kid get?

$31.00

200

Lennon has 12 records. He really wants 20 records. How many more records does Lennon need to buy in order to have 20?

8 more records

300

Alex wants to find the width of his desk. He knows that the length is 16" and the area is 304 in.² 

What is the width of the desk?

19"

400

Miguel bought a Coke for $2, and 4 bags of chips. He spent a total of $14. How much did each bag of chips cost?

$3.00

500

The sum of three consecutive numbers is 72. What are the smallest of these numbers?

23