To subtract fractions with the same denominators, just subtract the numerators! Subtract the numerators of the equivalent fractions that you wrote in step 2. Write equivalent fractions (making sure that each equivalent fraction contains the least common denominator (LCM)). Step 4. Next lesson. Add or subtract the fractions. The bottom numbers are already the same. When they’re larger, you may be able to take a shortcut. Need help with adding three fractions? Subtract the numerators of the fractions; The difference will be the numerator and the LCD will be the denominator of the answer. And as for the traditional way — well, your teacher and other math purists probably prefer you to use this way. Step 2. Examples of how to subtract fractions with different denominators 3. The result would be the final answer. When you think you have the answer, highlight or select the invisible text after the equal sign to read the answer and check your work. Here’s the easy way to subtract fractions that have different denominators: Cross-multiply the two fractions and subtract the second number from the first to get the numerator of the answer. To subtract fractions with the same denominators, just subtract the numerators! So 9 is the new numerator and 12 is the new denominator. References. Add and Subtract Fractions with Different or Unlike Denominators. In what way is subtracting fractions with unlike denominators like adding fractions with unlike denominators? Simplify the fraction (if needed). Make sure the bottom numbers (the denominators) are the same; Step 2. However, sometimes the denominators are different. To be able to subtract these two fractions, the denominators must be the same.. We begin by finding the lowest common multiple.This is the smallest number that both our denominators: 6 and 8 divide into. Then, subtract the fractions and simplify. There are no numbers that divide evenly into both 7 and 22, so this is our final, simplified answer. Examples of how to subtract fractions with different denominators. Go straight to step 2. So the LCM of 8 and 14 is. Write the result in simplified form. Make denominators the same to get 12/4-3/4= 9/4. Subtract the results from Step 1. Unlike the prior worksheets in this series, students will be required to find the least common denominator, subtract and reduce to … Adding fractions with unlike denominators may look tricky, but once you make the denominators the same, addition is a snap. For example, suppose you want to subtract 6/7 – 2… To get this answer, divide the top number (13) by the bottom number (9). Change the numerators by dividing their respective denominators into the new denominator and then multiplying the resulting number by the original numerators. Just enter the values in the specified field and you will get the resultant fraction. Adding and Subtracting Fractions With Different Denominators. Change 2/6 to 1/3 and then to 3/9. Multiply the two denominators together to get the denominator of the answer. The easiest way to do this is to use cross-multiplication: Cross-multiply the two fractions and create two fractions that have a common denominator. Simplify to 2 1/4. If you want to know how to add and subtract fractions with unlike denominators, just follow these steps. Page 1 of 3. A Powerpoint presentation on adding and subtracting fractions with both the same and different denominators. Adding them together simply involves adding the numerators to get 7/12. For the fraction 1/3… Let's use the fractions 9 / 11 and 2 / 4 as our example. Convert the first two fractions to equivalent fractions with denominators of 12, so that all three fractions can be added together. 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