Solving Two-Step Equations Effectively

What is the first step in solving a two-step equation?

• Verify the solution

• Undo addition or subtraction

• Undo multiplication or division

• Isolate the variable

Tags

CCSS.HSA.REI.A.1

In the equation 2x + 2 = 6, what is the first operation you need to undo?

• Addition of 2

• Multiplication by 2

• Division by 2

• Subtraction of 2

Tags

CCSS.HSA.REI.A.1

After subtracting 2 from both sides in the equation 2x + 2 = 6, what is the next step?

• Multiply both sides by 2

• Subtract 2 from both sides again

• Divide both sides by 2

• Add 2 to both sides

Tags

CCSS.8.EE.C.7B

How do you verify the solution of a two-step equation?

• By solving the equation again

• By substituting the solution back into the original equation

• By checking the solution with a calculator

• By graphing the solution

Tags

CCSS.7.EE.B.4A

In the equation 4x + 2 = 18, what is the first step to isolate x?

• Multiply both sides by 4

• Subtract 2 from both sides

• Divide both sides by 4

• Add 2 to both sides

Tags

CCSS.7.EE.B.4A

What is the solution to the equation 4x + 2 = 18?

• x = 6

• x = 4

• x = 8

• x = 2

Tags

CCSS.7.EE.B.4A

In the equation x/3 - 2 = 3, what is the first step to isolate x?

• Divide both sides by 3

• Add 2 to both sides

• Subtract 2 from both sides

• Multiply both sides by 3

Tags

CCSS.7.EE.B.4A

What is the solution to the equation x/3 - 2 = 3?

• x = 20

• x = 15

• x = 10

• x = 5

Tags

CCSS.7.EE.B.4A

In the equation 11x - 20 = 101, what is the first step to isolate x?

• Add 20 to both sides

• Subtract 20 from both sides

• Multiply both sides by 11

• Divide both sides by 11

Tags

CCSS.7.EE.B.4A

What is the solution to the equation 11x - 20 = 101?

• x = 11

• x = 10

• x = 9

• x = 12

Tags

CCSS.7.EE.B.4A