Combining Like Terms

Simplify: x + 3x + 6x + x

• 9x

• 11x

• 2x + 9x

• Can't be simplified

Simplify: 4q + 4t + 3q + t

• 12tq

• 3q + 4t

• 7q + 5t

• Can't be simplified

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

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

A coefficient is __________.

• the variable
• a constant
• an exponent
• the number that comes before the variable

A constant term has ______.

• no exponents
• no variables
• no numbers
• no letters

A variable can be _______?

• Any number

• Any letter of the alphabet

• only X

• only 1

Simplify by combining like terms.
m + 9 - 4m

• 5m
• m + 5m
• -3m + 9
• 4m

Simplify: 6x + 12x + 3 y

• 21x

• 18x + 3y

• 72x + 3y

• 6x + 15y

Simplify: 15x + 19 + 2x - 4

• 17x + 15

• 17x + 23

• 30x + 15

• 13x + 15

Combine like terms
3x + 2x + 11y - 7y

• 5x + 10y
• 5x - 4y
• 5x + 4y
• 5x -10y