Subtract 5/21 from 45/10
1st number: 4 5/10, 2nd number: 5/21
45/10 - 5/21 is 179/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
45/10 = 45 × 21/10 × 21 = 945/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
5/21 = 5 × 10/21 × 10 = 50/210 - Subtract the two like fractions:
945/210 - 50/210 = 945 - 50/210 = 895/210 - After reducing the fraction, the answer is 179/42
- In mixed form: 411/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-5/21 45/10-10/21 45/20-5/21 45/10-5/42 45/10-15/21 45/30-5/21 45/10-5/63 45/10-25/21 45/50-5/21 45/10-35/21 45/70-5/21