Combine Like Terms and Two-Step Equations

3x + 2x + 5y =

• 5x + 5y
• 2x + 5y
• -5x + 5y
• 3x + 3y

3x + 2x + 6y + 3
Which are like terms?

• 6y and 3
• 2x and 3
• 3x and 3
• 3x and 2x

Simplify:
3x - 2x - x

• 6x
• x
• 0
• 5x

a + a + a + a

• a + 4 

• 4a 

• a to the fourth power 

• 4a + 4 

y + x + y + y + x 

• 2 + 3 
• x + y 
• 2x + 3y 
• 5xy 

2r + 2 + 5r - 2 + r 

• 8r 
• 8r - 4 
• 12r 
• 7r + 4 + r 

3 + 12c - 4c 

• 16c + 3 
• 8c + 3 
• 5c 
• 8c 

6x + 1 + 7x 

• 13x - 1
• 14x 
• 7x + 6x + 1 
• 13x + 1 

3 + 5x + 4

• 5x ∙ 7 
• 12x 
• 35x 
• 5x + 7 

Scott works on cars. He charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie's car bill was $63.

• 7x + 35 = 63
• 7x = 63
• 7x - 35 = 63
• 35x + 7 = 63