Subtract 54/80 from 10/28
10/28 - 54/80 is -89/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
10/28 = 10 × 20/28 × 20 = 200/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
54/80 = 54 × 7/80 × 7 = 378/560 - Subtract the two like fractions:
200/560 - 378/560 = 200 - 378/560 = -178/560 - After reducing the fraction, the answer is -89/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/28-54/80 10/56-54/80 30/28-54/80 10/84-54/80 50/28-54/80 70/28-54/80