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Finite Math Examples
Step 1
Step 1.1
Factor out of .
Step 1.1.1
Factor out of .
Step 1.1.2
Factor out of .
Step 1.1.3
Factor out of .
Step 1.2
Reduce the expression by cancelling the common factors.
Step 1.2.1
Cancel the common factor.
Step 1.2.2
Rewrite the expression.
Step 1.3
Factor out of .
Step 1.3.1
Factor out of .
Step 1.3.2
Factor out of .
Step 1.3.3
Factor out of .
Step 1.3.4
Factor out of .
Step 1.3.5
Factor out of .
Step 1.4
Factor.
Step 1.4.1
Factor by grouping.
Step 1.4.1.1
For a polynomial of the form , rewrite the middle term as a sum of two terms whose product is and whose sum is .
Step 1.4.1.1.1
Factor out of .
Step 1.4.1.1.2
Rewrite as plus
Step 1.4.1.1.3
Apply the distributive property.
Step 1.4.1.2
Factor out the greatest common factor from each group.
Step 1.4.1.2.1
Group the first two terms and the last two terms.
Step 1.4.1.2.2
Factor out the greatest common factor (GCF) from each group.
Step 1.4.1.3
Factor the polynomial by factoring out the greatest common factor, .
Step 1.4.2
Remove unnecessary parentheses.
Step 2
Step 2.1
Finding the LCD of a list of values is the same as finding the LCM of the denominators of those values.
Step 2.2
The LCM is the smallest positive number that all of the numbers divide into evenly.
1. List the prime factors of each number.
2. Multiply each factor the greatest number of times it occurs in either number.
Step 2.3
The number is not a prime number because it only has one positive factor, which is itself.
Not prime
Step 2.4
Since has no factors besides and .
is a prime number
Step 2.5
The LCM of is the result of multiplying all prime factors the greatest number of times they occur in either number.
Step 2.6
The factor for is itself.
occurs time.
Step 2.7
The factor for is itself.
occurs time.
Step 2.8
The factor for is itself.
occurs time.
Step 2.9
The LCM of is the result of multiplying all factors the greatest number of times they occur in either term.
Step 2.10
The Least Common Multiple of some numbers is the smallest number that the numbers are factors of.
Step 3
Step 3.1
Multiply each term in by .
Step 3.2
Simplify the left side.
Step 3.2.1
Simplify each term.
Step 3.2.1.1
Rewrite using the commutative property of multiplication.
Step 3.2.1.2
Combine and .
Step 3.2.1.3
Cancel the common factor of .
Step 3.2.1.3.1
Cancel the common factor.
Step 3.2.1.3.2
Rewrite the expression.
Step 3.2.1.4
Apply the distributive property.
Step 3.2.1.5
Multiply by .
Step 3.2.1.6
Multiply by .
Step 3.2.1.7
Cancel the common factor of .
Step 3.2.1.7.1
Move the leading negative in into the numerator.
Step 3.2.1.7.2
Factor out of .
Step 3.2.1.7.3
Cancel the common factor.
Step 3.2.1.7.4
Rewrite the expression.
Step 3.2.1.8
Multiply by .
Step 3.2.1.9
Apply the distributive property.
Step 3.2.1.10
Multiply by .
Step 3.2.1.11
Multiply by .
Step 3.2.2
Simplify by adding terms.
Step 3.2.2.1
Subtract from .
Step 3.2.2.2
Add and .
Step 3.3
Simplify the right side.
Step 3.3.1
Cancel the common factor of .
Step 3.3.1.1
Move the leading negative in into the numerator.
Step 3.3.1.2
Factor out of .
Step 3.3.1.3
Cancel the common factor.
Step 3.3.1.4
Rewrite the expression.
Step 4
Step 4.1
Move all terms not containing to the right side of the equation.
Step 4.1.1
Subtract from both sides of the equation.
Step 4.1.2
Subtract from .
Step 4.2
Divide each term in by and simplify.
Step 4.2.1
Divide each term in by .
Step 4.2.2
Simplify the left side.
Step 4.2.2.1
Cancel the common factor of .
Step 4.2.2.1.1
Cancel the common factor.
Step 4.2.2.1.2
Divide by .
Step 4.2.3
Simplify the right side.
Step 4.2.3.1
Dividing two negative values results in a positive value.
Step 5
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
Mixed Number Form: