ONE STEP EQUATIONS

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.

y + 6 = 20

• y = 22

• y = 13

• y = 14

• y = 16

r - 18 = 27

• -45
• 45
• -9
• 9

13 + k = 25

• -12
• 12
• -38
• 38

What is the inverse operation of addition?

• addition
• subtraction
• multiplication
• division

Tags

CCSS.HSA.REI.A.1

What 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

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 
• Subtract 62 from each side.
• Multiply each side by 62.
• Add 123 to each side.

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

Tags

CCSS.7.NS.A.3

Choose the correct equation for the situation.
Jane is 3 years older than Sam. If Jane 12, how old is Sam?

• j - 3 = 12
• s - 3 = 12
• s + 3 = 12
• j + 12 = 3