Math Solving One Step Question

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

• Add 62 to each side. 

• Subtract 62 from each side.

• Multiply each side by 62.

• Add 123 to each side.

Solve the equation:
x÷3=12

• 15

• 9

• 36

• 4

Solve the equation: 
16 = x - 8

• 8

• 24

• -8

• -24

Solve the equation: 
22 = x + 14

• 46

• 36

• 22

• 8

Solve the equation:
w + (-7) = -10

• 3

• -3

• -17

• 17

Solve the equation: 
3x = 12

• 36

• 4

• 24

• 9

Solve the equation: 
-w = 8

• w = -8

• w = 9

• w = 8

• w =7

Solve the equation:
x - (-3) = 14

• x =17

• x = 14/3

• x = 11

• x = 14

What equation matches this situation?
"Robyn had some video games then bought 4 more.  Now she has a total of 10 games."

• g - 4 = 10

• g + 4 = 10

• 10 - 4 = g

• Answer not Given

What equation matches this situation?
"John wants to buy an MP3 Player that costs $30.98.  How much change did he receive if he gives the cashier $40."

• 40 + c = 30.98

• 30.98 + c = 40

• c - 40 = 30.98

• c - 30.98 = 40