Subtract 98/7 from 30/40
1st number: 30/40, 2nd number: 14 0/7
30/40 - 98/7 is -53/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
30/40 = 30 × 7/40 × 7 = 210/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
98/7 = 98 × 40/7 × 40 = 3920/280 - Subtract the two like fractions:
210/280 - 3920/280 = 210 - 3920/280 = -3710/280 - After reducing the fraction, the answer is -53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40-98/7 30/80-98/7 30/40-98/14 90/40-98/7 30/40-98/21 30/40-98/35 30/40-98/49