Subtract 36/30 from 27/21
1st number: 1 6/21, 2nd number: 1 6/30
27/21 - 36/30 is 3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
27/21 = 27 × 10/21 × 10 = 270/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
36/30 = 36 × 7/30 × 7 = 252/210 - Subtract the two like fractions:
270/210 - 252/210 = 270 - 252/210 = 18/210 - After reducing the fraction, the answer is 3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-36/30 27/21-72/30 27/42-36/30 27/21-36/60 81/21-36/30 27/63-36/30 27/21-36/90