Solving Equations with Variables on Both Sides

Solve: 5x + 15 = 10x - 40

• x = 10

• x = -10

• x = 11

• x = -11

Jacob solved the following equation using the steps shown.

Step 1 5x + 9 = 2x - 3

Step 2 3x + 9 = -3

Step 3 3x = -12

Step 4 x = -4

What operation did he perform to get from Step 1 to Step 2?

• Subtracted 2x from both sides of the equation

• Subtracted 9 from both sides of the equation

• Multiplied both sides of the equation by 3

• Added -3 to both sides of the equation

Tags

CCSS.HSA.REI.A.1

Solve the equation

4x - 5x + 9 =5x - 9

• x = -3

• x = 9

• x = 3

• x = -9

3x + 2(4x - 4) = 3

What is the solution to the equation?

• 4

• 3

• 2

• 1

Tags

CCSS.8.EE.C.7B

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

Solve the equation for the variable

• 4

• -10

• 1

• -1

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

3x + 10 + 2x = 2 (x + 8)

5x + 10 = 2x + 16

What is the next step? Drag the correct part under the equation. Be sure to put the one labeled left on the left.

d

a

-2x (left side)

-2x (right side)

/2x (left side)

/2x (right side)