Subtract 21/45 from 10/48
10/48 - 21/45 is -31/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
10/48 = 10 × 15/48 × 15 = 150/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
21/45 = 21 × 16/45 × 16 = 336/720 - Subtract the two like fractions:
150/720 - 336/720 = 150 - 336/720 = -186/720 - After reducing the fraction, the answer is -31/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/48-21/45 10/48-42/45 10/96-21/45 10/48-21/90 30/48-21/45 10/48-63/45 50/48-21/45 70/48-21/45