Subtract 21/27 from 63/7
1st number: 9 0/7, 2nd number: 21/27
63/7 - 21/27 is 74/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
63/7 = 63 × 27/7 × 27 = 1701/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
21/27 = 21 × 7/27 × 7 = 147/189 - Subtract the two like fractions:
1701/189 - 147/189 = 1701 - 147/189 = 1554/189 - After reducing the fraction, the answer is 74/9
- In mixed form: 82/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/7-42/27 63/14-21/27 63/7-21/54 63/7-63/27 63/21-21/27 63/7-21/81 63/35-21/27 63/49-21/27