Subtract 30/48 from 3/15
3/15 - 30/48 is -17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
3/15 = 3 × 16/15 × 16 = 48/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
30/48 = 30 × 5/48 × 5 = 150/240 - Subtract the two like fractions:
48/240 - 150/240 = 48 - 150/240 = -102/240 - After reducing the fraction, the answer is -17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-30/48 3/15-60/48 3/30-30/48 3/15-30/96 9/15-30/48 3/15-90/48 3/45-30/48 3/75-30/48 21/15-30/48