Subtract 9/63 from 18/7
1st number: 2 4/7, 2nd number: 9/63
18/7 - 9/63 is 17/7.
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,
18/7 = 18 × 9/7 × 9 = 162/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
9/63 = 9 × 1/63 × 1 = 9/63 - Subtract the two like fractions:
162/63 - 9/63 = 162 - 9/63 = 153/63 - After reducing the fraction, the answer is 17/7
- In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7-9/63 18/7-18/63 18/14-9/63 54/7-9/63 18/7-27/63 18/21-9/63 90/7-9/63 18/7-45/63 18/35-9/63 18/49-9/63