Subtract 12/45 from 45/63
45/63 - 12/45 is 47/105.
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,
45/63 = 45 × 5/63 × 5 = 225/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Subtract the two like fractions:
225/315 - 84/315 = 225 - 84/315 = 141/315 - After reducing the fraction, the answer is 47/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63-12/45 45/63-24/45 45/63-12/90 45/63-36/45 45/63-60/45 45/63-84/45