Subtract 42/20 from 28/54
1st number: 28/54, 2nd number: 2 2/20
28/54 - 42/20 is -427/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
28/54 = 28 × 10/54 × 10 = 280/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Subtract the two like fractions:
280/540 - 1134/540 = 280 - 1134/540 = -854/540 - After reducing the fraction, the answer is -427/270
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