Subtract 40/8 from 30/63
1st number: 30/63, 2nd number: 5 0/8
30/63 - 40/8 is -95/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
30/63 = 30 × 8/63 × 8 = 240/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
40/8 = 40 × 63/8 × 63 = 2520/504 - Subtract the two like fractions:
240/504 - 2520/504 = 240 - 2520/504 = -2280/504 - After reducing the fraction, the answer is -95/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63-40/8 30/63-80/8 30/63-40/16 90/63-40/8 30/63-40/24 30/63-40/56