One Step Equation Mistakes

Which step has the mistake?

• Step 1

• Step 2

• Step 3

• Step 4

• No mistakes

Solve the equation.

• x = 21

• x = 27

• x = 36

• x = 2.25

• 50

• 10

• -10

• -50

Solve for v.

• 60

• -3

• 15

• 3

• x = 24
• x = 12
• x = 17.5
• x = 19.5

Where does a mistake first occur? What should have been done?

• Line 2 - You should add 4 to both sides first.

• Line 2 - You should multiply by -6 on both sides first.

• Line 5 - Calculation error

• Line 4 - You should divide by -6 on both sides.

Where does a mistake first occur? What should have been done?

• Line 2 - You should add 4 to both sides first.

• Line 3 - You should have multiplied  2 on both sides.

• Line 3 - Calculation error

• There are no mistakes.

What was done to solve the equation?
(Line 1)          5x - 8 = 32
(Line 2)          5x = 40
(Line 3)          x = 8

• add 8 to both sides, then divide both sides by 5

• add 8 to both sides, then divide both sides by 40

• subtract 8 from both sides, then divide by 5

• subtract 8 from both sides, then multiply by 5

Where/what is the mistake?

• Line 2 - You should add 12 to both sides.

• Line 4 - You should multiply both sides by the reciprocal.

• Line 4 - You should multiply both sides by the original fraction. 

• Line 5 - There was a calculation error.

Where does a mistake first occur? What should have been done?

• Line 2 - You should subtract 4 from both sides.

• Line 5 - Calculation error

• Line 2 - You should divide by 3 first.

• Line 4 - You should divide by -3 on both sides.