Basic Math Examples

Solve for v 2/5-7/(v+6)=9/(5(v-6))
Step 1
Subtract from both sides of the equation.
Step 2
Find the LCD of the terms in the equation.
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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 LCM of is the result of multiplying all factors the greatest number of times they occur in either term.
Step 2.9
The Least Common Multiple of some numbers is the smallest number that the numbers are factors of.
Step 3
Multiply each term in by to eliminate the fractions.
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Step 3.1
Multiply each term in by .
Step 3.2
Simplify the left side.
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Step 3.2.1
Cancel the common factor of .
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Step 3.2.1.1
Move the leading negative in into the numerator.
Step 3.2.1.2
Factor out of .
Step 3.2.1.3
Cancel the common factor.
Step 3.2.1.4
Rewrite the expression.
Step 3.2.2
Multiply by .
Step 3.2.3
Apply the distributive property.
Step 3.2.4
Multiply by .
Step 3.3
Simplify the right side.
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Step 3.3.1
Simplify each term.
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Step 3.3.1.1
Rewrite using the commutative property of multiplication.
Step 3.3.1.2
Cancel the common factor of .
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Step 3.3.1.2.1
Cancel the common factor.
Step 3.3.1.2.2
Rewrite the expression.
Step 3.3.1.3
Cancel the common factor of .
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Step 3.3.1.3.1
Factor out of .
Step 3.3.1.3.2
Cancel the common factor.
Step 3.3.1.3.3
Rewrite the expression.
Step 3.3.1.4
Apply the distributive property.
Step 3.3.1.5
Multiply by .
Step 3.3.1.6
Cancel the common factor of .
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Step 3.3.1.6.1
Move the leading negative in into the numerator.
Step 3.3.1.6.2
Factor out of .
Step 3.3.1.6.3
Cancel the common factor.
Step 3.3.1.6.4
Rewrite the expression.
Step 3.3.1.7
Expand using the FOIL Method.
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Step 3.3.1.7.1
Apply the distributive property.
Step 3.3.1.7.2
Apply the distributive property.
Step 3.3.1.7.3
Apply the distributive property.
Step 3.3.1.8
Combine the opposite terms in .
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Step 3.3.1.8.1
Reorder the factors in the terms and .
Step 3.3.1.8.2
Add and .
Step 3.3.1.8.3
Add and .
Step 3.3.1.9
Simplify each term.
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Step 3.3.1.9.1
Multiply by .
Step 3.3.1.9.2
Multiply by .
Step 3.3.1.10
Apply the distributive property.
Step 3.3.1.11
Multiply by .
Step 3.3.2
Add and .
Step 4
Solve the equation.
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Step 4.1
Since is on the right side of the equation, switch the sides so it is on the left side of the equation.
Step 4.2
Move all terms containing to the left side of the equation.
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Step 4.2.1
Add to both sides of the equation.
Step 4.2.2
Add and .
Step 4.3
Subtract from both sides of the equation.
Step 4.4
Subtract from .
Step 4.5
Factor out of .
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Step 4.5.1
Reorder and .
Step 4.5.2
Factor out of .
Step 4.5.3
Factor out of .
Step 4.5.4
Factor out of .
Step 4.5.5
Factor out of .
Step 4.5.6
Factor out of .
Step 4.6
Divide each term in by and simplify.
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Step 4.6.1
Divide each term in by .
Step 4.6.2
Simplify the left side.
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Step 4.6.2.1
Cancel the common factor of .
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Step 4.6.2.1.1
Cancel the common factor.
Step 4.6.2.1.2
Divide by .
Step 4.6.3
Simplify the right side.
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Step 4.6.3.1
Divide by .
Step 4.7
Use the quadratic formula to find the solutions.
Step 4.8
Substitute the values , , and into the quadratic formula and solve for .
Step 4.9
Simplify.
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Step 4.9.1
Simplify the numerator.
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Step 4.9.1.1
Raise to the power of .
Step 4.9.1.2
Multiply .
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Step 4.9.1.2.1
Multiply by .
Step 4.9.1.2.2
Multiply by .
Step 4.9.1.3
Subtract from .
Step 4.9.1.4
Rewrite as .
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Step 4.9.1.4.1
Factor out of .
Step 4.9.1.4.2
Rewrite as .
Step 4.9.1.5
Pull terms out from under the radical.
Step 4.9.2
Multiply by .
Step 4.9.3
Simplify .
Step 4.10
The final answer is the combination of both solutions.
Step 5
The result can be shown in multiple forms.
Exact Form:
Decimal Form: