Staar Equations with Variables on Both Sides

10x + 9 = 4x - 9

• x = 0

• x = 3

• x = -3

• x = -18

7x = 4x + 33

• 3

• 11

• 21

• 88

-7x - 36 = 20 -3x

• -12

• -14

• 15

• 8

12k + 15 = 35 +2k

• k = 2

• k = 4

• k = -2

• k = -4

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

• 1/2

• 4

• 3

• 1

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 (right side)

/2x (left side)

/2x (right side)

-2x (left side)

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

Solve the equation for the variable

Describe what was done in each solving step!

• Divide by -10 on both sides

• Step 1

• Combine Like Terms

• Step 2

• Subtract 10 from both sides

• Step 5

• Distribute

• Step 3

• Subtract 4x from both sides

• Step 4