Subtract 9/7 from 27/63
1st number: 27/63, 2nd number: 1 2/7
27/63 - 9/7 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
27/63 = 27 × 1/63 × 1 = 27/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
9/7 = 9 × 9/7 × 9 = 81/63 - Subtract the two like fractions:
27/63 - 81/63 = 27 - 81/63 = -54/63 - After reducing the fraction, the answer is -6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/63-9/7 27/63-18/7 27/63-9/14 81/63-9/7 27/63-27/7 27/63-9/21 27/63-45/7 27/63-9/35 27/63-63/7 27/63-9/49