Subtract 63/50 from 21/28
1st number: 21/28, 2nd number: 1 13/50
21/28 - 63/50 is -51/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
21/28 = 21 × 25/28 × 25 = 525/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
63/50 = 63 × 14/50 × 14 = 882/700 - Subtract the two like fractions:
525/700 - 882/700 = 525 - 882/700 = -357/700 - After reducing the fraction, the answer is -51/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28-63/50 21/56-63/50 63/28-63/50 21/84-63/50