# How do you subtract denominators with variables?

## How do you subtract denominators with variables?

The steps we follow to subtract fractions with variables are as follows: Find a common denominator by multiplying the two denominators together. Manipulate the fractions so that they both have the common denominator. Once you have a common denominator in both fractions, subtract the numerator, and finally…

How do you subtract fractions with the same numerator and denominator?

To SUBTRACT fractions with like or the same denominator, just subtract the numerators then copy the common denominator. Always reduce your final answer to its lowest term.

How do you subtract rational fractions?

A rational expression is a ratio of two polynomials. To add or subtract two rational expressions with the same denominator, we simply add or subtract the numerators and write the result over the common denominator. When the denominators are not the same, we must manipulate them so that they become the same.

### How do you get rid of a fraction in the denominator?

Solve equations by clearing the Denominators Find the least common denominator of all the fractions in the equation. Multiply both sides of the equation by that LCD. This clears the fractions. Isolate the variable terms on one side, and the constant terms on the other side.

What are the steps in subtracting fractions?

There are 3 simple steps to subtract fractions. Step 1. Make sure the bottom numbers (the denominators) are the same. Step 2. Subtract the top numbers (the numerators). Put the answer over the same denominator. Step 3. Simplify the fraction (if needed).

How do you subtract fractions in simplest form?

You can make equivalent fractions by multiplying or dividing the top and bottom numbers by the same number. To add or subtract fractions you need to use equivalent fractions so that the bottom numbers are the same. The simplest form of a fraction is the one with the smallest possible numbers at top and bottom.

## What are the rules for adding and subtracting fractions?

When adding or subtracting fractions, the denominator must be the same for both fractions in order to perform the operation. This rule makes sense because you cannot add fractions from different groups. For instance, you cannot add 1/2 and 1/4 because they represent different groups.