Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : Mar 28, 2025


Calculate the subtraction of fractions 15/8 and 18/4 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 15/8 and 18/4?

The given fractions are 15/8 and 18/4

Firstly the L.C.M should be done for the denominators of the two fractions 15/8 and 18/4

15/8 - 18/4

The LCM of 8 and 4 (denominators of the fractions) is 8
2 8, 4
2 4, 2
1, 2

So the lcm of the given numbers is 2 x 2 x 1 x 2 = 8


= 15 x 1 - 18 x 2/8

= 15 - 36/8

= -21/8

Result: -21/8

FAQs on Subtraction of Fractions 15/8 and 18/4

1. How do you subtract fractions with different denominators 15/8 and 18/4?

To subtract fractions 15/8 and 18/4 with like/different denominators find the denominators LCM and make both fractions' denominators equal to the LCM of 8 and 4 value i.e 8. After that add numerators and simplify the fraction i.e -21/8.

2. What is 15/8 minus 18/4 as a fraction?

15/8 minus 18/4 as a fraction is equal to -21/8.

3. How to subtract 15/8 and 18/4 on a calculator?

You have to give these numbers 15/8 and 18/4 in the input fields and press the calculate button of the tool to avail the answer -21/8 quickly.