Subtract 42/72 from 5/63
5/63 - 42/72 is -127/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
5/63 = 5 × 8/63 × 8 = 40/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504 - Subtract the two like fractions:
40/504 - 294/504 = 40 - 294/504 = -254/504 - After reducing the fraction, the answer is -127/252
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