Subtract 2/21 from 45/10
1st number: 4 5/10, 2nd number: 2/21
45/10 - 2/21 is 185/42.
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,
2/21 = 2 × 10/21 × 10 = 20/210 - Subtract the two like fractions:
945/210 - 20/210 = 945 - 20/210 = 925/210 - After reducing the fraction, the answer is 185/42
- In mixed form: 417/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-2/21 45/10-4/21 45/20-2/21 45/10-2/42 45/10-6/21 45/30-2/21 45/10-2/63 45/10-10/21 45/50-2/21 45/10-14/21 45/70-2/21