One Step Equations Subtraction and Adding

y - 33 = 147

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.

5 less than a number is 15.

• x - 5 = 15

• 5 - x = 15

• 15 - x = 5

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

Solve the following equation
8 = m - 12

• 4

• 0.5

• 5.0

• 20

What equation matches this situation?
Robyn had some video games then bought 4 more.  Now she has a total of 10 games.

• v - 4 = 10

• v + 4 = 10

• 10 - 4 = v

• Answer not Given

Solve the equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5

Solve the following equation
1 + a = 15

• 14

• 16

• 12

• - 16

18 + a = -50

• a = -950

• a = -68

• a = -32

• a = -50/19

Which equation has w = 8 as the solution?

• 8w= 64

• 16w = 240

• 16 - w = 9

• 4 + w = 10