Subtract 84/27 from 9/20
1st number: 9/20, 2nd number: 3 3/27
9/20 - 84/27 is -479/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
9/20 = 9 × 27/20 × 27 = 243/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
84/27 = 84 × 20/27 × 20 = 1680/540 - Subtract the two like fractions:
243/540 - 1680/540 = 243 - 1680/540 = -1437/540 - After reducing the fraction, the answer is -479/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-84/27 9/40-84/27 9/20-84/54 27/20-84/27 9/60-84/27 9/20-84/81 45/20-84/27 63/20-84/27