Balancing Expressions

A combination of numbers and/or variables(letter) AND at least one operation is an

• Equation

• Expression

• Inequality

Tags

CCSS.6.EE.A.2B

Ensuring that the expressions on both sides of an equation are equal

• Check Clearing

• Reconciling

• Balancing

• Rearranging

Tags

CCSS.8.EE.C.7B

Find the value of the variable in 2x - 4 = 10.

Tags

CCSS.7.EE.B.4A

Find the value of the variable in 5x - 6 = 3x - 8.

Sort each move as keeping an equation BALANCED or NOT!

Groups:

(a) Balanced

,

(b) Not Balanced

• Adding 3x on both sides

• Multiplying both sides by 1/2

• Subtracting by 5 on the left and adding 5 on the right

Tags

CCSS.7.EE.B.4A

Simplify the expression: 14y - 5(3 - 2y)

Mathematical Equivalence

ON

Tags

CCSS.6.EE.A.3

To balance an equation, 

• both sides must equal 10

• the right side must be greater

• both sides must be equal

Tags

CCSS.6.EE.B.7

• 3

• 6

• 12

• 9

Tags

CCSS.6.EE.B.7

Simplify the expression: 10x - 3(2x + 8).

Mathematical Equivalence

ON

Tags

CCSS.6.EE.A.3

Simplify the expression: 5(x + 2) + 2x.

Mathematical Equivalence

ON

Tags

CCSS.6.EE.A.3