Subtract 45/27 from 7/63
1st number: 7/63, 2nd number: 1 18/27
7/63 - 45/27 is -14/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 63 × 3 = 189,
7/63 = 7 × 3/63 × 3 = 21/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
45/27 = 45 × 7/27 × 7 = 315/189 - Subtract the two like fractions:
21/189 - 315/189 = 21 - 315/189 = -294/189 - After reducing the fraction, the answer is -14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63-45/27 7/63-90/27 7/63-45/54 21/63-45/27 7/63-45/81 35/63-45/27 49/63-45/27