Subtract 90/30 from 72/3
1st number: 24 0/3, 2nd number: 3 0/30
72/3 - 90/30 is 21/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
72/3 = 72 × 10/3 × 10 = 720/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
90/30 = 90 × 1/30 × 1 = 90/30 - Subtract the two like fractions:
720/30 - 90/30 = 720 - 90/30 = 630/30 - After reducing the fraction, the answer is 21/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/6-90/30 72/3-90/60 72/9-90/30 72/15-90/30 72/21-90/30