Subtract 15/63 from 21/8
1st number: 2 5/8, 2nd number: 15/63
21/8 - 15/63 is 401/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 8 × 63 = 504,
21/8 = 21 × 63/8 × 63 = 1323/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
15/63 = 15 × 8/63 × 8 = 120/504 - Subtract the two like fractions:
1323/504 - 120/504 = 1323 - 120/504 = 1203/504 - After reducing the fraction, the answer is 401/168
- In mixed form: 265/168
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