Multi Step Equations Mastery

• 2

• 4

• -4

• -2

• 3

• 12

• 6 3/4

• 3 1/2

2x - 3 + 4x = 27

• 12

• 4

• 5

• 15

Solve

• 5

• 2

• No Solution

• Infinitely Many Solutions

8v - 4(v + 8) = 8

• 2

• 10

• 4

• -4 

2x + 3(5x - 7) = 47

• 1

• 2

• 3

• 4

-8(-8x - 6) = -6x - 22

• 2/5

• -1

• 8/7 

• 2

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator

• The student did not multiply all terms by the common denominator

• The student did not use opposite operations appropriately

• The student did not correctly eliminate the variable from one side of the equation

How many solutions does the equation below have?
6(3a +1) - 30 = 3(2a - 4)

• Identity

• No Solution

• Three Solutions

• One Solution

Find the Error
What error did the student make when solving the equation:
5x + 6 =  66
5x - 6 = 66 -6
5x = 60
5*5x= 60*5
x = 300

• The student subtracted 6 from both sides instead of adding

• Student multiplied by 5 instead of dividing by 5

• Student got the wrong answer when subtracting 66-6

• The student did not correctly eliminate the variable from one side of the equation