Subtract 70/63 from 9/7
1st number: 1 2/7, 2nd number: 1 7/63
9/7 - 70/63 is 11/63.
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,
9/7 = 9 × 9/7 × 9 = 81/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
70/63 = 70 × 1/63 × 1 = 70/63 - Subtract the two like fractions:
81/63 - 70/63 = 81 - 70/63 = 11/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7-70/63 9/14-70/63 27/7-70/63 9/21-70/63 45/7-70/63 9/35-70/63 63/7-70/63 9/49-70/63