Subtract 21/90 from 49/10
1st number: 4 9/10, 2nd number: 21/90
49/10 - 21/90 is 14/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
49/10 = 49 × 9/10 × 9 = 441/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Subtract the two like fractions:
441/90 - 21/90 = 441 - 21/90 = 420/90 - After reducing the fraction, the answer is 14/3
- In mixed form: 42/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/10-21/90 49/10-42/90 49/20-21/90 49/10-63/90 49/30-21/90 49/50-21/90 49/70-21/90