Subtract 10/45 from 90/7
1st number: 12 6/7, 2nd number: 10/45
90/7 - 10/45 is 796/63.
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,
10/45 = 10 × 7/45 × 7 = 70/315 - Subtract the two like fractions:
4050/315 - 70/315 = 4050 - 70/315 = 3980/315 - After reducing the fraction, the answer is 796/63
- In mixed form: 1240/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-20/45 90/14-10/45 90/7-10/90 90/7-30/45 90/21-10/45 90/7-50/45 90/35-10/45 90/7-70/45 90/49-10/45