Subtract 49/45 from 28/63
1st number: 28/63, 2nd number: 1 4/45
28/63 - 49/45 is -29/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
28/63 = 28 × 5/63 × 5 = 140/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
49/45 = 49 × 7/45 × 7 = 343/315 - Subtract the two like fractions:
140/315 - 343/315 = 140 - 343/315 = -203/315 - After reducing the fraction, the answer is -29/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63-49/45 28/63-98/45 28/63-49/90 84/63-49/45