Subtract 3/90 from 72/5
1st number: 14 2/5, 2nd number: 3/90
72/5 - 3/90 is 431/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
72/5 = 72 × 18/5 × 18 = 1296/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
3/90 = 3 × 1/90 × 1 = 3/90 - Subtract the two like fractions:
1296/90 - 3/90 = 1296 - 3/90 = 1293/90 - After reducing the fraction, the answer is 431/30
- In mixed form: 1411/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5-6/90 72/10-3/90 72/5-9/90 72/15-3/90 72/5-15/90 72/25-3/90 72/5-21/90 72/35-3/90