Subtract 4/63 from 18/27
18/27 - 4/63 is 38/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
18/27 = 18 × 7/27 × 7 = 126/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
4/63 = 4 × 3/63 × 3 = 12/189 - Subtract the two like fractions:
126/189 - 12/189 = 126 - 12/189 = 114/189 - After reducing the fraction, the answer is 38/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27-4/63 18/27-8/63 18/54-4/63 54/27-4/63 18/27-12/63 18/81-4/63 90/27-4/63 18/27-20/63 18/27-28/63