Subtract 20/7 from 7/54
1st number: 7/54, 2nd number: 2 6/7
7/54 - 20/7 is -1031/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
7/54 = 7 × 7/54 × 7 = 49/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
20/7 = 20 × 54/7 × 54 = 1080/378 - Subtract the two like fractions:
49/378 - 1080/378 = 49 - 1080/378 = -1031/378
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