Algebra Review

Creating Expressions

100

Write an expression for: “5 more than a number n.”

n + 5

200

Double a number.

2n

300

A number doubled, then increased by 3

2n + 3

400

A number minus 4, then add 6

n − 4 + 6

500

You pay $10 to enter a game and $2 for every round you play.

2r + 10

Finding a variable

100

x+6=14

x = 8

200

3x=21

7

300

2x−5=11

x = 8

400

4(x−1)=20

6

500

3x+8=x+22

x = 7

Solving an equation

100

2x+1 for x=4 

9

200

3n−2 for n=5

13

300

4(t+1) for t=3

16

400

2x²+3 for x=4

35

500

5(a−2)+3a for a=6

38

Simplifying

100

3x+x

4x

200

5y+2y+1

7y + 1

300

4n−2n+6

2n + 6

400

2(3x+1)

6x + 2

500

3(2x+1)−(x−4)

5x + 7

Inequalities

100

x+3<10

x < 7

200

n−4≥5

n ≥ 9

300

3x<12

x < 4

400

2x+5≤19

x ≤ 7

500

4x−3>x+9

x > 4