Two Sided Equations Addition and Subtraction

Solve the equation
c - 21 = 45

• 66

• 62

• 24

• none of the above

Solve the equation

y + 8.3= 12.7

• 28

• 21

• 4.2

• 4.4

Solve the equation
1/4 + x = 7/8

• 1

• 6/7

• 5/8

• 2/3

Solve the equation
x + 1¹/₂  = 5³/₄

• x = 4 ¹/₄

• x = 4 ⁵/₄

• x = 4 ²/₂

• x = 5

Solve the equation. 
54 = s + 34

• s= 10 

• s=20 

• s=34

• s=14

Solve for the equation
f - 22 = 36

• f= 62

• f= 14

• f=58

• f= 12

Solve the equation. 
  z- 2⅓= 1⅔

• z= 4

• z= 3

• z= 2⅓

• z= 3⅔

What property states that if you subtract the same number from both sides of an equation, the two sides will remain equal.    For example,  3+4 =  7   
               -4         -4
both sides equal 3!

• Addition property of equality

• Subtraction property of equality

• Multiplication property of equality 

• Commutative Property

What property states that you can add the same number to both sides of an equation and the two sides will remain equal.

• distributive property

• addition property of equality

• commutative property

• associative property

Why do you add 7 to both sides?

• 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.