Intro to Algebra

5x + 3x = 24

• x =3

• x = 9

• x = 1

• x = 8

5y - 4 = 3y + 12

• y = 0

• y = 8

• y = 9

• y = 6

3x + 11 = 29

What is the variable in 3x - 5

• x

• 5

• 3

10+x=20

• x=10

• x=5

• x=12

• x=15

What are variables in math?

• Letters

• Numbers

• Expressions

A variable represents what is ______________. 

• the answer

• the operation

• the difference

• unknown 

A variable is . . .

• an awesome number

• a number represented by a letter

• an infinite number

• a number multiplied by another number

5p + 4h - 2
Which are the variables? 

• 5p, 4h, 2

• 2

• p, h

• 5, 4

What is the value of d in the following equation?
15 + d = 27

• 13

• 12

• 14

• 8