Solve the Rational Equation for x 6/(3x)+5/4=3/x

Factor ${\displaystyle 3}$ out of ${\displaystyle 6}$.

Factor ${\displaystyle 3}$ out of ${\displaystyle 3x}$.

Cancel the common factor.

Rewrite the expression.

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

Since ${\displaystyle x,x,4}$ contain both numbers and variables, there are two steps to find the LCM. Find LCM for the numeric part ${\displaystyle 1,1,4}$ then find LCM for the variable part ${\displaystyle x^1,x^1}$.

The LCM is the smallest positive number that all of the numbers divide into evenly.

The number ${\displaystyle 1}$ is not a prime number because it only has one positive factor, which is itself.

${\displaystyle 4}$ has factors of ${\displaystyle 2}$ and ${\displaystyle 2}$.

Multiply ${\displaystyle 2}$ by ${\displaystyle 2}$.

The factor for ${\displaystyle x^1}$ is ${\displaystyle x}$ itself.

The LCM of ${\displaystyle x^1,x^1}$ is the result of multiplying all prime factors the greatest number of times they occur in either term.

The LCM for ${\displaystyle x,x,4}$ is the numeric part ${\displaystyle 4}$ multiplied by the variable part.

Multiply each term in ${\displaystyle \frac{2}{x}=\frac{3}{x}-\frac{5}{4}}$ by ${\displaystyle 4x}$.

Simplify the left side.

Simplify the right side.

Rewrite the equation as ${\displaystyle 12-5x=8}$.

Move all terms not containing ${\displaystyle x}$ to the right side of the equation.

Divide each term in ${\displaystyle -5x=-4}$ by ${\displaystyle -5}$ and simplify.