one step equations #2

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.

x - 8 = -5 

• 13

• -13

• 3

• -3

19  + a  =  -50

• a = -950

• a =  -69

• a = -31

• a = -50/19

x + 12 = 20

• x = 32

• x = -32

• x = 8

• x = -8

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.

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

What what is the inverse operation of subtraction?

• addition

• subtraction

• multiplication

• division

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

r + 12 = 25

• 37

• 13

• 300

• Answer not Given

y - 14 = 66

• 80

• 52

• 79

• Answer Not Given