One Step Equation

x = 20

x = 7

x = 10

x = 3

• x = 20

• x = 7

• x = 10

• x = 3

x - 8 = -5 

• 13

• -13

• 3

• -3

Solve:

• 96

• -96

• 4

• -4

Solve:

• -12

• -8

• 12

• 8

r + 20 = 27

• r = 7

• r = 47

• r = 13

• r = 20

x - (-2) = 7

• -9

• -5

• 5

• 9

In the equation
x + 7 = 12
7 is being added to the variable, x. How should you show your work to isolate the variable and solve the equation? 

• Subtract 7 from both sides. The solution is x = 5.

• Add 7 to both sides.
  The solution is x = 19.

• Multiply both sides by 7 The solution is x = 84.

What would be the best first step to solving the equation in one step?

• multiply both sides by ³/₂ 

• divide both sides by 3

• multiply both sides by 3

• subtract ²/₃  from both sides

What would be the best first step to solving the equation?

• multiply both sides by 3

• multiply both sides by 4

• divide both sides by 3

• divide both sides by 4

Which choice models this situation? Marcus needs to sell 25 tickets to a fundraiser by Friday. So far, he has sold 9 tickets. How many tickets does he still need to sell?

• t - 9 = 25

• t + 9 = 25

• 9t = 25

• t/9 = 25