Subtract 27/20 from 36/30
1st number: 1 6/30, 2nd number: 1 7/20
36/30 - 27/20 is -3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
36/30 = 36 × 2/30 × 2 = 72/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
27/20 = 27 × 3/20 × 3 = 81/60 - Subtract the two like fractions:
72/60 - 81/60 = 72 - 81/60 = -9/60 - After reducing the fraction, the answer is -3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30-27/20 36/30-54/20 36/60-27/20 36/30-27/40 36/30-81/20 36/90-27/20 36/30-27/60