Subtract 4/90 from 30/27
1st number: 1 3/27, 2nd number: 4/90
30/27 - 4/90 is 16/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
30/27 = 30 × 10/27 × 10 = 300/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
4/90 = 4 × 3/90 × 3 = 12/270 - Subtract the two like fractions:
300/270 - 12/270 = 300 - 12/270 = 288/270 - After reducing the fraction, the answer is 16/15
- In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/27-4/90 30/27-8/90 30/54-4/90 90/27-4/90 30/27-12/90 30/81-4/90 30/27-20/90 30/27-28/90