Subtract 21/5 from 75/27
1st number: 2 21/27, 2nd number: 4 1/5
75/27 - 21/5 is -64/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 5 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
75/27 = 75 × 5/27 × 5 = 375/135 - Likewise, for the 2nd fraction, since 5 × 27 = 135,
21/5 = 21 × 27/5 × 27 = 567/135 - Subtract the two like fractions:
375/135 - 567/135 = 375 - 567/135 = -192/135 - After reducing the fraction, the answer is -64/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/27-42/5 75/54-21/5 75/27-21/10 75/27-63/5 75/81-21/5 75/27-21/15 75/27-21/25 75/27-21/35