Subtract 54/72 from 27/50
27/50 - 54/72 is -21/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 50 × 36 = 1800,
27/50 = 27 × 36/50 × 36 = 972/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
54/72 = 54 × 25/72 × 25 = 1350/1800 - Subtract the two like fractions:
972/1800 - 1350/1800 = 972 - 1350/1800 = -378/1800 - After reducing the fraction, the answer is -21/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/50-54/72 81/50-54/72