Subtract 42/54 from 28/42
28/42 - 42/54 is -1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
28/42 = 28 × 9/42 × 9 = 252/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378 - Subtract the two like fractions:
252/378 - 294/378 = 252 - 294/378 = -42/378 - After reducing the fraction, the answer is -1/9
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