Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : Mar 28, 2025


Calculate the subtraction of fractions 18/15 and 17/8 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 18/15 and 17/8?

The given fractions are 18/15 and 17/8

Firstly the L.C.M should be done for the denominators of the two fractions 18/15 and 17/8

18/15 - 17/8

The LCM of 15 and 8 (denominators of the fractions) is 120

Given numbers has no common factors except 1. So, there LCM is their product i.e 120


= 18 x 8 - 17 x 15/120

= 144 - 255/120

= -111/120

= -37/40

Result: -37/40

FAQs on Subtraction of Fractions 18/15 and 17/8

1. How do you subtract fractions with different denominators 18/15 and 17/8?

To subtract fractions 18/15 and 17/8 with like/different denominators find the denominators LCM and make both fractions' denominators equal to the LCM of 15 and 8 value i.e 120. After that add numerators and simplify the fraction i.e -37/40.

2. What is 18/15 minus 17/8 as a fraction?

18/15 minus 17/8 as a fraction is equal to -37/40.

3. How to subtract 18/15 and 17/8 on a calculator?

You have to give these numbers 18/15 and 17/8 in the input fields and press the calculate button of the tool to avail the answer -37/40 quickly.