Subtract 7/42 from 49/54
49/54 - 7/42 is 20/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
49/54 = 49 × 7/54 × 7 = 343/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
7/42 = 7 × 9/42 × 9 = 63/378 - Subtract the two like fractions:
343/378 - 63/378 = 343 - 63/378 = 280/378 - After reducing the fraction, the answer is 20/27
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