Subtract 5/90 from 24/21
1st number: 1 3/21, 2nd number: 5/90
24/21 - 5/90 is 137/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
24/21 = 24 × 30/21 × 30 = 720/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
5/90 = 5 × 7/90 × 7 = 35/630 - Subtract the two like fractions:
720/630 - 35/630 = 720 - 35/630 = 685/630 - After reducing the fraction, the answer is 137/126
- In mixed form: 111/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21-5/90 24/21-10/90 24/42-5/90 72/21-5/90 24/21-15/90 24/63-5/90 24/21-25/90 24/21-35/90