Subtract 98/40 from 28/15
1st number: 1 13/15, 2nd number: 2 18/40
28/15 - 98/40 is -7/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
28/15 = 28 × 8/15 × 8 = 224/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
98/40 = 98 × 3/40 × 3 = 294/120 - Subtract the two like fractions:
224/120 - 294/120 = 224 - 294/120 = -70/120 - After reducing the fraction, the answer is -7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15-98/40 28/30-98/40 28/15-98/80 84/15-98/40 28/45-98/40 28/75-98/40