Subtract 28/27 from 49/70
1st number: 49/70, 2nd number: 1 1/27
49/70 - 28/27 is -91/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 27 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
49/70 = 49 × 27/70 × 27 = 1323/1890 - Likewise, for the 2nd fraction, since 27 × 70 = 1890,
28/27 = 28 × 70/27 × 70 = 1960/1890 - Subtract the two like fractions:
1323/1890 - 1960/1890 = 1323 - 1960/1890 = -637/1890 - After reducing the fraction, the answer is -91/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70-28/27 49/70-56/27 49/70-28/54 49/70-84/27 49/70-28/81