Subtract 42/20 from 28/27
1st number: 1 1/27, 2nd number: 2 2/20
28/27 - 42/20 is -287/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
28/27 = 28 × 20/27 × 20 = 560/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Subtract the two like fractions:
560/540 - 1134/540 = 560 - 1134/540 = -574/540 - After reducing the fraction, the answer is -287/270
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