Solving Equations

What is the inverse operation of subtraction?

• Subtraction
• Multiplication
• Division
• Addition

Tags

CCSS.2.NBT.B.5

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

Tags

CCSS.HSA.REI.A.1

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.

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?
-6x=-24

• multiply both sides by -6
• divide both sides by -6
• add 6  to both sides
• subtract -6  from both sides

Tags

CCSS.6.EE.B.7

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Tags

CCSS.7.EE.B.4A

-6p - 3 = 9 

• -2
• 2
• 6
• 3

Tags

CCSS.7.EE.B.4A

8 - 5b = -7

• 3
• -3
• 4
• 1

Tags

CCSS.7.EE.B.4A

Tags

CCSS.7.EE.B.4A

Did Sarah make an error? If so, which is the best description of her error?

• She didn't distribute correctly. The second step should read 3x - 12 = 24

• She didn't distribute correctly. The second step should read -3x - 12 = 24

• She didn't distribute correctly. The second step should read -3x + 12 = 24

• She didn't make an error.

Tags

CCSS.HSA.REI.A.1