Subtract 15/8 from 28/63
1st number: 28/63, 2nd number: 1 7/8
28/63 - 15/8 is -103/72.
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,
28/63 = 28 × 8/63 × 8 = 224/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
15/8 = 15 × 63/8 × 63 = 945/504 - Subtract the two like fractions:
224/504 - 945/504 = 224 - 945/504 = -721/504 - After reducing the fraction, the answer is -103/72
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