Subtract 75/27 from 30/15
1st number: 2 0/15, 2nd number: 2 21/27
30/15 - 75/27 is -7/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
30/15 = 30 × 9/15 × 9 = 270/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
75/27 = 75 × 5/27 × 5 = 375/135 - Subtract the two like fractions:
270/135 - 375/135 = 270 - 375/135 = -105/135 - After reducing the fraction, the answer is -7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15-75/27 30/15-75/54 90/15-75/27 30/45-75/27 30/15-75/81 30/75-75/27