One Step Linear Equations Addition and Subtraction of Integers

s - 22 = 50

• s = 28

• s = 20

• s = 72

• s = 75

y - 33 = 147

• y = 114

• y = 177

• y = 180

• Answer not Given

17 = x + 3

• x = 20

• x = 14

• x = 13

• x = 19

x - 2 = 12

• x = 14

• x = -10

• x = 20

• x = 10

Why do you add 7?

• To undo addition, you subtract.

• To balance the equation, you subtract 7 on both sides.

• To undo subtraction, you add.

• To balance the equation,you add 7 to both sides.

Solve the equation
c - 21 = 45

• 66

• 62

• 24

• none of the above

Solve the equation
a - 40 = 57

• 17

• 28

• 97

• 99

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.

g - 15 = 30

• g = 35

• g = 45

• g = 15

• g = 12

S + 18 = 24

• S = 42

• S = 3²

• S = 18

• S = 4 + 2