Solving Multi-Step Equations

3x - 7 = 3(x - 3) + 2

• one

• no solutions

• infinite solutions

2x + 1 = 2(x -10)

• No Solution

• x = 0

• all real numbers (infinite)

3x + 15 = 3(x + 5)

• No Solution

• x = 15

• all real numbers (infinite)

What is the first step in solving the equation 2a - 4(a - 5) = 10

• Add 4 to both sides

• Add the 2a and a 

• Distribute 4 to a and -5

• Distribute -4 to a and -5

Solve the equation:
3x - x + 4 = 4(2x +1)

• no solution

• infinite solutions

• x = 6

• x = 0

Pristine House Cleaners charges $19.85 plus $32 per room. Sparkle House Cleaners charges $61.85 plus $18 per room. Write and solve an equation to find the number of rooms for which the total cost of both house cleaners is the same.

• 4 rooms

• 1/3 rooms

• 3.5 rooms

• 3 rooms

Solve for x:
4 - 2(x - 3) = 24

• - 7

• 7

• 14

• - 14

Solve:

2(2x + 3) = -6(x + 9)

• 2

• 6

• -6

• 7.5

Solve:

7x + 19 = -2x + 55

• 4

• 14.8

• 8.2

• -4

• A
• B
• C
• D