Subtract 16/45 from 27/21
1st number: 1 6/21, 2nd number: 16/45
27/21 - 16/45 is 293/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
27/21 = 27 × 15/21 × 15 = 405/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
16/45 = 16 × 7/45 × 7 = 112/315 - Subtract the two like fractions:
405/315 - 112/315 = 405 - 112/315 = 293/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-16/45 27/21-32/45 27/42-16/45 27/21-16/90 81/21-16/45 27/21-48/45 27/63-16/45 27/21-80/45