Subtract 7/54 from 7/63
7/63 - 7/54 is -1/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 63 × 6 = 378,
7/63 = 7 × 6/63 × 6 = 42/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
7/54 = 7 × 7/54 × 7 = 49/378 - Subtract the two like fractions:
42/378 - 49/378 = 42 - 49/378 = -7/378 - After reducing the fraction, the answer is -1/54
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