Move to the left side of the equation by subtracting it from both sides.

Move to the left side of the equation by adding it to both sides.

To write as a fraction with a common denominator, multiply by .

Write each expression with a common denominator of , by multiplying each by an appropriate factor of .

Multiply and .

Move to the left of .

Combine the numerators over the common denominator.

Simplify the expression.

Multiply by .

Subtract from .

To write as a fraction with a common denominator, multiply by .

Simplify terms.

Multiply and .

Combine the numerators over the common denominator.

Simplify the numerator.

Subtract from .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Simplify with factoring out.

Factor out of .

Rewrite as .

Factor out of .

Simplify the expression.

Rewrite as .

Move the negative in front of the fraction.

To write as a fraction with a common denominator, multiply by .

Multiply and .

Move to the left of .

Combine the numerators over the common denominator.

Multiply by .

Subtract from .

To write as a fraction with a common denominator, multiply by .

Multiply and .

Combine the numerators over the common denominator.

Subtract from .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Rewrite as .

Factor out of .

Simplify the expression.

Rewrite as .

Move the negative in front of the fraction.

Finding the LCD of a list of values is the same as finding the LCM of the denominators of those values.

Since contain both numbers and variables, there are two steps to find the LCM. Find LCM for the numeric part then find LCM for the variable part .

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.

Since has no factors besides and .

is a prime number

The number is not a prime number because it only has one positive factor, which is itself.

Not prime

The LCM of is the result of multiplying all prime factors the greatest number of times they occur in either number.

The factor for is itself.

occurs time.

The LCM of is the result of multiplying all prime factors the greatest number of times they occur in either term.

The LCM for is the numeric part multiplied by the variable part.

Multiply each term in by in order to remove all the denominators from the equation.

Simplify .

Cancel the common factor of .

Move the leading negative in into the numerator.

Cancel the common factor.

Rewrite the expression.

Apply the distributive property.

Multiply by .

Multiply .

Multiply by .

Multiply by .

Subtract from both sides of the equation.

Divide each term by and simplify.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Divide by .

Solve by Factoring 4/x=9/5-(7x-4)/(5x)