PSABM6NQ - Student Facing Task---Acc7.3 Lesson 9 Dealing with Negative Numbers (6.EE.A.4, 7.EE.B.4.a)

Which equation doesn't belong?  Explain your reasoning.

Part A)

Solve each equation.

x + 6 = 4

x = _____

Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):
Part B)

x - -4 = -6

x = _____

Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):
Part C)

2(x - 1) = -200

x = _____

Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):
Part D)

2x + -3 = -23

x = _____

Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):
Part A)

Here are some equations that all have the same solution.

x = -6

x - 3 = -9

-9 = x - 3

900 = -100(x - 3)

900 = (x - 3) * (-100)

900 = -100x + 300

Explain how you know that each equation has the same solution as the previous equation. Pause for discussion before moving to the next question.

Part B)

Keep your work secret from your partner. Start with the equation -x. Do the same thing to each side at least three times to create an equation that has the same solution as the starting equation. Write the equation you ended up with on a slip of paper, and trade equations with your partner.