Subtract 2/21 from 30/48
30/48 - 2/21 is 89/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
30/48 = 30 × 7/48 × 7 = 210/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
2/21 = 2 × 16/21 × 16 = 32/336 - Subtract the two like fractions:
210/336 - 32/336 = 210 - 32/336 = 178/336 - After reducing the fraction, the answer is 89/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/48-2/21 30/48-4/21 30/96-2/21 30/48-2/42 90/48-2/21 30/48-6/21 30/48-2/63 30/48-10/21 30/48-14/21