Subtract 4/45 from 35/21
1st number: 1 14/21, 2nd number: 4/45
35/21 - 4/45 is 71/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
35/21 = 35 × 15/21 × 15 = 525/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
4/45 = 4 × 7/45 × 7 = 28/315 - Subtract the two like fractions:
525/315 - 28/315 = 525 - 28/315 = 497/315 - After reducing the fraction, the answer is 71/45
- In mixed form: 126/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-4/45 35/21-8/45 35/42-4/45 35/21-4/90 35/21-12/45 35/63-4/45 35/21-20/45 35/21-28/45