Solving Two-Step Equations

Solve the following two-step equation

2x - 14 = 34

• x = 10

• x = 48

• x = 40

• x = 24

Tags

CCSS.7.EE.B.4A

To Solve a Simple Two-Step Equation you need to ...

• Undo the Addition/Subtraction first (to remove the constant term), then undo the Multiplication /Division (to remove the coefficient and isolate the variable)

• Undo the Multiplication/Division first (to remove the coefficient and isolate the variable), then undo the Addition/Subtraction (to remove the constant term)

• Multiply both sides by 1

• Substitue zero for the variable (to remove the variable and isolate the constant

Tags

CCSS.7.EE.B.4A

What is the first step you would do to solve the following equation?

2x - 14 = 34

• Add 14 to both sides

• Subtract 14 from both sides

• Divide both sides by 2

• Combine like terms

Tags

CCSS.7.EE.B.4A

What is the first step you would do to solve the following problem (x-11)/8 = 13

• Multiply both sides by 8

• Add 11 to both sides

• Divide both sides by 8

• Subtract 11 from both sides

Tags

CCSS.7.EE.B.4A

Find the solution:
10 = 4x - 2

• x = 3

• x = 2

• x = -3

• x = -2

Tags

CCSS.7.EE.B.4A

Solve the two step equation above.

(type your whole solution with the variable and the equal sign)

Mathematical Equivalence

ON

Tags

CCSS.7.EE.B.4A

Solve:

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• none of the above

Tags

CCSS.7.EE.B.4A

4x + 7 = 23

• x = 16

• x = 4

• x = 9

• x = 12

Tags

CCSS.7.EE.B.4A

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• none of the above

Tags

CCSS.7.EE.B.4A

What is the result of solving for the variable?

-2x = 6

• x = -12

• x = 3

• x = -3

• x = 12

Tags

CCSS.6.EE.B.7