solve equations using add/subtract

Using the "opposite operation" to "undo" and isolate the variable when solving an equation is more commonly called...

• Inverse operations
• math
• variable
• PEMDAS

Tags

CCSS.6.EE.B.5

Solve for x
17 = x + 3

• x = 20
• x = 14
• x = 13
• x = 19

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

x - 4 = 17

• x = 21
• x = 13
• x = 19
• x = 24

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

x - 18 = 3

• x = 37
• x = 15
• x = -21
• x = 21

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

x + 24 = 44

• x = -20
• x = 68
• x = 20
• x = -68

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

c - 11 = 9

• c = -2
• c = -20
• c= 2
• c = 20

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

To solve the equation
x + 5 = 8
 I would ....

• subtract 5 from x
• subtract 5 from both sides
• subtract 5 from one side and add 5 to the other
• add 5 to both sides

Tags

CCSS.6.EE.B.7

What is the inverse operation that must be done to both sides of the equation?
x - 17 = 17

• subtract 17 from both sides
• multiply both sides by 17
• add 17 to both sides
• divide both sides by 17

Tags

CCSS.7.EE.A.1

CCSS.7.EE.B.3

An inverse operation is

• reversing the sign in an inequality
• using the opposite operation to solve equations
•  A number’s distance from zero

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.7

One difference between equations and expressions would be...

• you solve both of them using inverse operations.
• you flip the symbol when you multiply or divide by a negative
• equations have an equals because they show two equal expressions. Expresions have terms and operations.