Algebra Review Sam and Corbin's class

What is a variable?

• A thing that affects experiments in Science

• A pizza Sam and Corbin order on Fridays

• A variable is a symbol for an unknown number

• A variation

What is an example of an algebraic expression?

• 2× + 1 =

• 32 x 10 =

• 3 + 6 =

• 10 - 5 =

Gather like terms

2y + 3y + 5y + y =

• -14y

• 14y

• 11x

• 11y

Gather like terms

-10x + 2x + 4x

• -3x

• 7x

• 4x

• -4x

Gather like terms

-14a + 2a - 6a

• 18a

• -18a

• 18b

• -22a

Gather like terms

3h + -3h + h =

• 7h

• -1h

• 2h

• h

Solve by inspection

3 + t = 4

• 1

• 3

• 5

• 6

Solve by inspection

y/3 = 3

• 12

• 3

• 9

• -3

Solve by inspection

2x = 4

• 8

• 4

• -2

• 2

Solve by inspection

t -5 = 15

• 10

• 5

• 20

• 15