Combining Like Terms

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

Like terms have the same _____ and the same _____.

• variables and numbers
• signs and numbers
• variables and exponents
• variables and signs

a + a + a + a

• a + 4 
• 4a 
• a to the fourth power 
• 4a + 4 

3 + 5x + 4

• 5x ∙ 7 
• 12x 
• 35x 
• 5x + 7 

4x + 3 + 7x 

• 14x 
• 11x + 3 
• 28x + 3 
• 11x - 3 

5z - 4z 

• 1z
• 9z 
• 20z 
• 0 

5a + 2a + 2a 

• 9a
• 8a
• 7a

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

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

Simplify  2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x