Subtract 42/54 from 4/63
4/63 - 42/54 is -5/7.
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,
4/63 = 4 × 6/63 × 6 = 24/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378 - Subtract the two like fractions:
24/378 - 294/378 = 24 - 294/378 = -270/378 - After reducing the fraction, the answer is -5/7
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