Subtract 10/30 from 21/16
1st number: 1 5/16, 2nd number: 10/30
21/16 - 10/30 is 47/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
21/16 = 21 × 15/16 × 15 = 315/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
10/30 = 10 × 8/30 × 8 = 80/240 - Subtract the two like fractions:
315/240 - 80/240 = 315 - 80/240 = 235/240 - After reducing the fraction, the answer is 47/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16-10/30 21/16-20/30 21/32-10/30 21/16-10/60 63/16-10/30 21/48-10/30 21/16-10/90 21/16-50/30 21/80-10/30 21/16-70/30