Combine Like Terms

Simplify the expression: 2x + 1 + 7x 

• 10x

• 10

• 9x + 1

• 9 + 1x

-9n + 12n + 7

• 28n

• 10n

• 21n + 7

• 3n + 7

5a + 2b - 7b + 4a

• 7b - 3a

• 9a - 5b

• 4ab

• 12a + 6b

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

• 9x + 7y + 13

• 6x + 2y + 2

• 25x + 2y + 3

• x + 7y + 12

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

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

Are 7a and 4a like terms?

• Yes

• No

X+X+X+X+X

• X + 5 

• 5X

• X+X+X+X+X+5

• X to the 5th power 

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4