Subtract 35/21 from 5/45
1st number: 5/45, 2nd number: 1 14/21
5/45 - 35/21 is -14/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
5/45 = 5 × 7/45 × 7 = 35/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
35/21 = 35 × 15/21 × 15 = 525/315 - Subtract the two like fractions:
35/315 - 525/315 = 35 - 525/315 = -490/315 - After reducing the fraction, the answer is -14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/45-35/21 5/45-70/21 5/90-35/21 5/45-35/42 15/45-35/21 5/45-35/63 25/45-35/21 35/45-35/21