Subtract 30/63 from 10/7
1st number: 1 3/7, 2nd number: 30/63
10/7 - 30/63 is 20/21.
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,
10/7 = 10 × 9/7 × 9 = 90/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
30/63 = 30 × 1/63 × 1 = 30/63 - Subtract the two like fractions:
90/63 - 30/63 = 90 - 30/63 = 60/63 - After reducing the fraction, the answer is 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/7-30/63 10/7-60/63 10/14-30/63 30/7-30/63 10/7-90/63 10/21-30/63 50/7-30/63 10/35-30/63 70/7-30/63 10/49-30/63