Subtract 98/48 from 21/42
1st number: 21/42, 2nd number: 2 2/48
21/42 - 98/48 is -37/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
21/42 = 21 × 8/42 × 8 = 168/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
98/48 = 98 × 7/48 × 7 = 686/336 - Subtract the two like fractions:
168/336 - 686/336 = 168 - 686/336 = -518/336 - After reducing the fraction, the answer is -37/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/84-98/48 21/42-98/96 63/42-98/48