Subtract 70/20 from 75/27
1st number: 2 21/27, 2nd number: 3 10/20
75/27 - 70/20 is -13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
75/27 = 75 × 20/27 × 20 = 1500/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
70/20 = 70 × 27/20 × 27 = 1890/540 - Subtract the two like fractions:
1500/540 - 1890/540 = 1500 - 1890/540 = -390/540 - After reducing the fraction, the answer is -13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/54-70/20 75/27-70/40 75/81-70/20 75/27-70/60