Subtract 28/45 from 75/63
1st number: 1 12/63, 2nd number: 28/45
75/63 - 28/45 is 179/315.
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,
75/63 = 75 × 5/63 × 5 = 375/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
28/45 = 28 × 7/45 × 7 = 196/315 - Subtract the two like fractions:
375/315 - 196/315 = 375 - 196/315 = 179/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/63-56/45 75/63-28/90 75/63-84/45