Subtract 63/7 from 21/50
1st number: 21/50, 2nd number: 9 0/7
21/50 - 63/7 is -429/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 7 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
21/50 = 21 × 7/50 × 7 = 147/350 - Likewise, for the 2nd fraction, since 7 × 50 = 350,
63/7 = 63 × 50/7 × 50 = 3150/350 - Subtract the two like fractions:
147/350 - 3150/350 = 147 - 3150/350 = -3003/350 - After reducing the fraction, the answer is -429/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-63/7 21/50-63/14 63/50-63/7 21/50-63/21 21/50-63/35 21/50-63/49