Subtract 98/80 from 7/15
1st number: 7/15, 2nd number: 1 18/80
7/15 - 98/80 is -91/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
7/15 = 7 × 16/15 × 16 = 112/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
98/80 = 98 × 3/80 × 3 = 294/240 - Subtract the two like fractions:
112/240 - 294/240 = 112 - 294/240 = -182/240 - After reducing the fraction, the answer is -91/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15-98/80 7/30-98/80 21/15-98/80 7/45-98/80 35/15-98/80 7/75-98/80 49/15-98/80