Subtract 45/27 from 28/49
1st number: 28/49, 2nd number: 1 18/27
28/49 - 45/27 is -23/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 27 is 1323
Next, find the equivalent fraction of both fractional numbers with denominator 1323 - For the 1st fraction, since 49 × 27 = 1323,
28/49 = 28 × 27/49 × 27 = 756/1323 - Likewise, for the 2nd fraction, since 27 × 49 = 1323,
45/27 = 45 × 49/27 × 49 = 2205/1323 - Subtract the two like fractions:
756/1323 - 2205/1323 = 756 - 2205/1323 = -1449/1323 - After reducing the fraction, the answer is -23/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/49-45/27 28/49-90/27 28/98-45/27 28/49-45/54 84/49-45/27 28/49-45/81