Isolating the Variable

What action must we perform to isolate the variable in the following expression?

x - 0.001

• Add 0.001

• Subtract 0.001

• Multiply by 0.001

• Divide by 0.001

• Multiply by 2

• Multiply by 3

What does y equal in this equation?

• 12

• 3

• 6

• -3

What would you do to isolate the variable in this equation?

• Divide by 4 on both sides

• Divide by -4 on both sides

• Subtract 4 on both sides

• Subtract 32 on both sides

What does m equal in this equation?

• 12

• -12

• 22

• 20

What would you do to isolate the variable in this equation?

• Divide both sides by -5

• Subtract 7 from both sides

• Multiply both sides by -7

• Add 7 to both sides.

What should be done to isolate the variable in this equation?

• Subtract 3 from both sides

• Subtract 8 from both sides

Is this student showing the correct work for isolating b to solve the equation?

• No

• Yes

What should be done to isolate b?

• Divide each side of the equation by 18

• Multiply each side of the equation by -6

• Multiply each side of the equation by 18

• Divide each side of the equation by -6

Before you think about isolating x, what is happening to x?

• It's being multiplied by -11

• It's being added to -11

• It's being subtracted from -11

• It's being divided by -11