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

Mathematical Equivalence

OFF

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!

• Distribute

• Step 2

• Combine Like Terms

• Step 3

• Subtract 4x from both sides

• 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 (right side)

-2x (left side)

/2x (right side)

Mathematical Equivalence

ON

Mathematical Equivalence

ON