Solve for Variable on Both Sides Equal Sign

The goal when solving an equation is to

• find what the variable is.

• check the solution.

• guess and check.

• combine like terms.

What is the correct step to solve for the variable?

m - 5 = 15

• add 15 to both sides

• add 5 to both sides

• subtract 15 from both sides

• subtract 5 from both sides

What is the correct step to solve for the variable ?

• subtract 7 from both sides.

• add 7 to both sides.

• multiply both sides by 7

• divide both sides by 7

What is the correct step to solve for the variable ?

• add 62 to each side.

• subtract 62 from each side.

• multiply each side by 62.

• divide each side by 123

Mathematical Equivalence

ON

Mathematical Equivalence

ON

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

• Distribute

• Step 1

• Combine Like Terms

• Step 3

Mathematical Equivalence

OFF

You rewrote the equation after multiplying the LCD 4 to equal 2x - 20 = 3x + 12 What is the value of x?

Mathematical Equivalence

ON