Subtract 18/7 from 63/27
1st number: 2 9/27, 2nd number: 2 4/7
63/27 - 18/7 is -5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
63/27 = 63 × 7/27 × 7 = 441/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
18/7 = 18 × 27/7 × 27 = 486/189 - Subtract the two like fractions:
441/189 - 486/189 = 441 - 486/189 = -45/189 - After reducing the fraction, the answer is -5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/27-36/7 63/54-18/7 63/27-18/14 63/27-54/7 63/81-18/7 63/27-18/21 63/27-90/7 63/27-18/35 63/27-18/49