8.1 One Step Equations - PreAlg 7

For the equation x + 7 = 12 , 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.

Which algebraic equation matches this situation?

Robyn had some video games then bought 4 more. Now she has a total of 10 games.

• v - 4 = 10

• v + 4 = 10

• 10 - 4 = v

• Answer not Given

What is the opposite operation of subtraction?

• Subtraction

• Multiplication

• Division

• Addition

What is the opposite operation of division?

• Division

• Multiplication

• Addition

• Subtraction

The objective when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

Tags

CCSS.7.EE.B.4A

Sally had 10 peaches left at her roadside fruit stand. She went to the orchard and picked more peaches to stock up the stand. There are now 73 peaches at the stand.

Write an algebraic equation that could be used to find how many peaches she picked.

• x + 10 = 73

• 73 + x = 10

• 10x = 73

• x - 10 = 73

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 in one step?

• multiply both sides by ³/₂ 
• divide both sides by 3
• multiply both sides by 3
• subtract ²/₃  from both sides

Tags

CCSS.6.EE.B.7

What would be the best first step to solving the equation in one step?

• multiply both sides by 11
• multiply both sides by ¹/₂
• divide both sides by 2
• multiply both sides by 2

Tags

CCSS.6.EE.B.7

Solve the equation for k.

• $-\frac{5}{24}$

• $1\frac{13}{24}$
  

• $-1\frac{13}{24}$
  

• $\frac{5}{24}$