Subtract 42/27 from 20/80
1st number: 20/80, 2nd number: 1 15/27
20/80 - 42/27 is -47/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
20/80 = 20 × 27/80 × 27 = 540/2160 - Likewise, for the 2nd fraction, since 27 × 80 = 2160,
42/27 = 42 × 80/27 × 80 = 3360/2160 - Subtract the two like fractions:
540/2160 - 3360/2160 = 540 - 3360/2160 = -2820/2160 - After reducing the fraction, the answer is -47/36
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