Subtract 18/54 from 42/63
42/63 - 18/54 is 1/3.
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,
42/63 = 42 × 6/63 × 6 = 252/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378 - Subtract the two like fractions:
252/378 - 126/378 = 252 - 126/378 = 126/378 - After reducing the fraction, the answer is 1/3
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