Models and Solve Equations with Variables on Both Sides

• t = 6

• t = -16

• t = -5

• t = 4

9+2a=-3-4a

• a = -2

• a = 2

• a = 5

• a = -1

2a+4=7+a

• a = 1

• a = -3

• a = -1

• a = 3

is 7 a solution to the equation
3x+8-x=5x-4

• yes

• no

• maybe

Tags

CCSS.6.EE.B.5

Mathematical Equivalence

OFF

Tags

CCSS.7.EE.B.4A

The square and equilateral triangle below have the same perimeter. Find the value of x. Then, find the perimeter of each shape. Equation:​ (a)   X = ​ (b)   Perimeter: ​ (c)  

• 2

• 36

• 5

• 42

Describe what was done in each solving step!

• Subtract 4x from both sides

• Step 2

• Combine Like Terms

• Step 3

• Distribute

• Step 1

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 (left side)

/2x (right side)

-2x (right side)

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

Mathematical Equivalence

ON