Subtract 49/48 from 20/30
1st number: 20/30, 2nd number: 1 1/48
20/30 - 49/48 is -17/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
20/30 = 20 × 8/30 × 8 = 160/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
49/48 = 49 × 5/48 × 5 = 245/240 - Subtract the two like fractions:
160/240 - 245/240 = 160 - 245/240 = -85/240 - After reducing the fraction, the answer is -17/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30-49/48 20/30-98/48 20/60-49/48 20/30-49/96 60/30-49/48 20/90-49/48