Subtract 50/60 from 21/56
21/56 - 50/60 is -11/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 60 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Likewise, for the 2nd fraction, since 60 × 14 = 840,
50/60 = 50 × 14/60 × 14 = 700/840 - Subtract the two like fractions:
315/840 - 700/840 = 315 - 700/840 = -385/840 - After reducing the fraction, the answer is -11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56-50/60 63/56-50/60