Solving Two Step Equations

33 = 4a - 7

• a=-10
• a=10
• a=4.5

6 - 3a = 21

• a= 9
• a= -9
• a= -5
• a= 5

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Solve 3x - 7 = 32

• 13

• 3

• 12

• 7

WRITE AN EQUATION

331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were in each bus?

• 7x+6=331

• 13x=331

• 6x+7=331

• 331-7=6x

WRITE AN EQUATION

Aliyah had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• 24-10=7x

• 7x- 24=10

• 7x+ 10=24

• 10+x=14

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat.  Write an equation to find out how many hours, h, they rented the Boat if the total cost was $33.

• h = 2(9) + 15
• 33 = 15h + 2
• h = 15(9) + 2
• 33 = 2h + 15

What is the equation for this model ?

• 5x + 4 = 15

• 4x - 5 = 15

• 4x + 5 = 15

• 9x = 15

What is the equation for this model ?

• 3x + 4 = 13

• 3x - 4 = -1

• 6x = 14

• -3x + 4 = 13

Which equation represents the total cost of a repair by an electrician after x hours?
An electrician charges $90 per hour plus a $50 travelling fee.

• y = 50 - 90x
• y = 90x + 50
• y = -50x + 90
• y = -90 - 50x