Subtract 28/45 from 14/63
14/63 - 28/45 is -2/5.
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,
14/63 = 14 × 5/63 × 5 = 70/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
28/45 = 28 × 7/45 × 7 = 196/315 - Subtract the two like fractions:
70/315 - 196/315 = 70 - 196/315 = -126/315 - After reducing the fraction, the answer is -2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/63-28/45 14/63-56/45 14/63-28/90 42/63-28/45 14/63-84/45 70/63-28/45 98/63-28/45