One Step Equations With All Operations

2x - 3 + 4x = 27

• 12

• 4

• 5

• 15

-(n - 8) = -2

• 6

• 10

• -10

• -6

5x - 4 + 2x = 3

• 1

• 2

• 3

• 4

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step

• They should add 19 instead of subtracting 19

• I can not find an error

• Instead of adding 3k they should subtract 3k

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

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.

What is a possible first step to solve this equation:

-11 - 3x = 44 - 2x

• Add 3 to both sides

• Subtract 11 to both sides

• Add 11 to both sides

• Add 2 on both sides.

What is another possible first step to solve this equation:

-11 - 3x = 44 - 2x

• Add 3 to both sides

• Add 2 to both sides

• Subtract 2x to both sides

• Add 2x on both sides.

Solve the equation:

-11 - 3x = 44 - 2x

• 33

• 11

• -55

• 55

Solve the equation:

5x - 4 + 2x = 3

• 1

• 2

• 3

• 4