Subtract 12/45 from 40/63
40/63 - 12/45 is 116/315.
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,
40/63 = 40 × 5/63 × 5 = 200/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Subtract the two like fractions:
200/315 - 84/315 = 200 - 84/315 = 116/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63-12/45 40/63-24/45 40/63-12/90 40/63-36/45 40/63-60/45 40/63-84/45