Subtract 45/63 from 72/7
1st number: 10 2/7, 2nd number: 45/63
72/7 - 45/63 is 67/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
72/7 = 72 × 9/7 × 9 = 648/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
45/63 = 45 × 1/63 × 1 = 45/63 - Subtract the two like fractions:
648/63 - 45/63 = 648 - 45/63 = 603/63 - After reducing the fraction, the answer is 67/7
- In mixed form: 94/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7-90/63 72/14-45/63 72/21-45/63 72/35-45/63 72/49-45/63