Lessons on Equations

Solving Equations

What do you know about solving equations?

What fits in the box

​8 =

​

+ 5

Solution

​8 =

​3

A
Our SOLUTION is what goes inside the box

​

​+5

​is the same as a VARIABLE (x)

Multiple Choice

Solve for x: 64 = x + 16

• 24

• -48

• 48

• 50

Properties of Equality (+ & -)

​We use our Properties of Equality or inverse operations to isolate a variable.

 

Multiple Choice

What is the inverse operation to solve the following equation: x - 4 = 16 ?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

To solve the equation: -5 = c + 7, you would ​_____ both sides and find that c =_____  .

• subtract 5; c = 2

• add 5; c = 12

• subtract 7; c = -12

• add 7; c = 2

Properties of Equality (x & /÷)

​We use our Properties of Equality or inverse operations to isolate a variable.

Multiple Choice

What is the inverse operation to solve the below equation?

6x = 18

• Multiplication

• Addition

• Subtraction

• Division

Multiple Choice

Solve for x, then identify the inverse operation used: $$\frac{x}{8}\ =\ 8$$

• 1; division

• -1; division

• 64; multiplication

• 16; multiplication