Subtract 40/27 from 28/72
1st number: 28/72, 2nd number: 1 13/27
28/72 - 40/27 is -59/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
28/72 = 28 × 3/72 × 3 = 84/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
40/27 = 40 × 8/27 × 8 = 320/216 - Subtract the two like fractions:
84/216 - 320/216 = 84 - 320/216 = -236/216 - After reducing the fraction, the answer is -59/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72-40/27 28/72-80/27 28/72-40/54 84/72-40/27 28/72-40/81