Subtract 21/7 from 9/50
1st number: 9/50, 2nd number: 3 0/7
9/50 - 21/7 is -141/50.
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,
9/50 = 9 × 7/50 × 7 = 63/350 - Likewise, for the 2nd fraction, since 7 × 50 = 350,
21/7 = 21 × 50/7 × 50 = 1050/350 - Subtract the two like fractions:
63/350 - 1050/350 = 63 - 1050/350 = -987/350 - After reducing the fraction, the answer is -141/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/50-21/7 9/50-42/7 9/50-21/14 27/50-21/7 9/50-63/7 45/50-21/7 9/50-21/35 63/50-21/7 9/50-21/49