Subtract 42/30 from 49/48
1st number: 1 1/48, 2nd number: 1 12/30
49/48 - 42/30 is -91/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
49/48 = 49 × 5/48 × 5 = 245/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
42/30 = 42 × 8/30 × 8 = 336/240 - Subtract the two like fractions:
245/240 - 336/240 = 245 - 336/240 = -91/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/48-42/30 49/48-84/30 49/96-42/30 49/48-42/60 49/48-42/90