Subtract 21/8 from 20/63
1st number: 20/63, 2nd number: 2 5/8
20/63 - 21/8 is -1163/504.
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,
20/63 = 20 × 8/63 × 8 = 160/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
21/8 = 21 × 63/8 × 63 = 1323/504 - Subtract the two like fractions:
160/504 - 1323/504 = 160 - 1323/504 = -1163/504
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