Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : Mar 28, 2025


Calculate the subtraction of fractions 3/9 and 4/7 with the help of the handy tool Subtraction of Fractions Calculator and get the detailed step-by-step answer.




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How do you Subtract Fractions 3/9 and 4/7?

The given fractions are 3/9 and 4/7

Firstly the L.C.M should be done for the denominators of the two fractions 3/9 and 4/7

3/9 - 4/7

The LCM of 9 and 7 (denominators of the fractions) is 63

Given numbers has no common factors except 1. So, there LCM is their product i.e 63


= 3 x 7 - 4 x 9/63

= 21 - 36/63

= -15/63

= -5/21

Result: -5/21

FAQs on Subtraction of Fractions 3/9 and 4/7

1. How do you subtract fractions with different denominators 3/9 and 4/7?

To subtract fractions 3/9 and 4/7 with like/different denominators find the denominators LCM and make both fractions' denominators equal to the LCM of 9 and 7 value i.e 63. After that add numerators and simplify the fraction i.e -5/21.

2. What is 3/9 minus 4/7 as a fraction?

3/9 minus 4/7 as a fraction is equal to -5/21.

3. How to subtract 3/9 and 4/7 on a calculator?

You have to give these numbers 3/9 and 4/7 in the input fields and press the calculate button of the tool to avail the answer -5/21 quickly.