Expressions and Combining Like Terms

Find the sum:  (6 - k) + (4k + 1)

• 5k + 7

• 3k + 7

• 5k + 5

• 3k + 5

Simplify the Expression: -9x + 17x + (-8x)

• 34

• Zero

• -34

• 1x

Simplify the Expression: 21 - 8x - 4 + 9x

• -4x -17

• 17x + 25

• x + 17

• 17x + 17

Expressions are made up of these...

• Variables

• Operations

• Terms

• Distributive Property

Simplify the expression:

-r -10r

• 11r

• -11r

• 9r

• -11

5x + 3y + 5 + 4x + 3y + y + 8

• 9x + 7y + 13

• 6x + 2y + 2

• 25x + 2y + 3

• x + 7y + 12

Write the phrase as an expression.
twice a number x plus 8

• 2 + 8x

• 2x + 8

• 2(x+8)

• 8(2+x)

Identify the "like terms" in the expression: 
2x + 4y - 3x + y - x

• 2x and 4y and -3x

• 2x and -3x and x
  4y and y 

• they are all like terms

• there are no like terms

Simplify by combining like terms.

Answer explanation

x² can be combined with 2x²

• True

• False