Subtract 98/45 from 90/7
1st number: 12 6/7, 2nd number: 2 8/45
90/7 - 98/45 is 3364/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
90/7 = 90 × 45/7 × 45 = 4050/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
98/45 = 98 × 7/45 × 7 = 686/315 - Subtract the two like fractions:
4050/315 - 686/315 = 4050 - 686/315 = 3364/315 - In mixed form: 10214/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14-98/45 90/7-98/90 90/21-98/45 90/35-98/45 90/49-98/45