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7.
Properties of Equality
You can multiply the same number to
both sides of an equation.
8.
Properties of Equality
You can multiply the same number to
both sides of an equation.
You can divide the same number from
both sides of an equation.
18.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
to get the variable alone?
19.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
Divide by 5
to get the variable alone?
20.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
Divide by 5
to get the variable alone?
STEP TWO: Use the Property
of Equality and divide by 5
on both sides.
21.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
Divide by 5
to get the variable alone?
STEP TWO: Use the Property
of Equality and divide by 5 p x 5 ÷ 5 = 25 ÷ 5
on both sides.
22.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
Divide by 5
to get the variable alone?
STEP TWO: Use the Property
of Equality and divide by 5 p x 5 ÷ 5 = 25 ÷ 5
on both sides.
STEP THREE: x 5 ÷ 5 cancel out.
What is 25 ÷ 5?
23.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
Divide by 5
to get the variable alone?
STEP TWO: Use the Property
of Equality and divide by 5 p x 5 ÷ 5 = 25 ÷ 5
on both sides.
STEP THREE: x 5 ÷ 5 cancel out.
What is 25 ÷ 5?
24.
Example 3
Solve p x 5 = 25
STEP ONE: What can you do
Divide by 5
to get the variable alone?
STEP TWO: Use the Property
of Equality and divide by 5 p x 5 ÷ 5 = 25 ÷ 5
on both sides.
STEP THREE: x 5 ÷ 5 cancel out. p = 5
What is 25 ÷ 5?
26.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
to get the variable alone?
27.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
Multiply by 4
to get the variable alone?
28.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
Multiply by 4
to get the variable alone?
STEP TWO: Use the Property
of Equality and multiply by 4
on both sides.
29.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
Multiply by 4
to get the variable alone?
STEP TWO: Use the Property
of Equality and multiply by 4
on both sides.
n÷4x4=7x4
30.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
Multiply by 4
to get the variable alone?
STEP TWO: Use the Property
of Equality and multiply by 4
on both sides.
n÷4x4=7x4
STEP THREE: ÷ 4 x 4 cancel out.
What is 7 x 4?
31.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
Multiply by 4
to get the variable alone?
STEP TWO: Use the Property
of Equality and multiply by 4
on both sides.
n÷4x4=7x4
STEP THREE: ÷ 4 x 4 cancel out.
What is 7 x 4?
32.
Example 4
Solve n ÷ 4 = 7
STEP ONE: What can you do
Multiply by 4
to get the variable alone?
STEP TWO: Use the Property
of Equality and multiply by 4
on both sides.
n÷4x4=7x4
STEP THREE: ÷ 4 x 4 cancel out. n = 28
What is 7 x 4?
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