Solving one-step equations

What are the two basic rules for solving algebraic equations?

• Whatever you do to one side of the equal sign, you must copy and do on the other side of the equal sign

• Negative signs can be ignored

• Always start on the left side, regardless of where the variable is

• Always do the opposite operation

Tags

CCSS.6.EE.B.7

Solve for x
17 = x + 3

• x = 20
• x = 14
• x = 13
• x = 19

Tags

CCSS.6.EE.B.7

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.7

x - 4 = 17

• x = 21
• x = 13
• x = 19
• x = 24

Tags

CCSS.6.EE.B.7

x - 18 = 3

• x = 37
• x = 15
• x = -21
• x = 21

Tags

CCSS.6.EE.B.7

x + 24 = 44

• x = -20
• x = 68
• x = 20
• x = -68

Tags

CCSS.6.EE.B.7

19  + a  =  -50

• a = -950
• a =  -69
• a = -31
• a = -50/19

Tags

CCSS.6.EE.B.7

c - 11 = 9

• c = -2
• c = -20
• c= 2
• c = 20

Tags

CCSS.6.EE.B.7

What would be the best first step to solving the equation?
-3=x+5

• add 3 to both sides
• subtract 5 from both sides
• add 5 to both sides
• subtract -5 from both sides

Tags

CCSS.6.EE.B.7

What would be the best first step to solving the equation?
-18=m+12

• add 18 to both sides
• subtract 18 from both sides
• add 12 to both sides
• subtract 12 from both sides

Tags

CCSS.6.EE.B.7