Subtract 7/8 from 42/63
42/63 - 7/8 is -5/24.
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,
42/63 = 42 × 8/63 × 8 = 336/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
7/8 = 7 × 63/8 × 63 = 441/504 - Subtract the two like fractions:
336/504 - 441/504 = 336 - 441/504 = -105/504 - After reducing the fraction, the answer is -5/24
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