Subtract 48/45 from 10/21
1st number: 10/21, 2nd number: 1 3/45
10/21 - 48/45 is -62/105.
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,
10/21 = 10 × 15/21 × 15 = 150/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
48/45 = 48 × 7/45 × 7 = 336/315 - Subtract the two like fractions:
150/315 - 336/315 = 150 - 336/315 = -186/315 - After reducing the fraction, the answer is -62/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-48/45 10/21-96/45 10/42-48/45 10/21-48/90 30/21-48/45 10/63-48/45 50/21-48/45 70/21-48/45