Subtract 27/14 from 18/80, Solve 18/80

Subtract 27/14 from 18/80

1^st number: 18/80, 2^nd number: 1 13/14

18/80 - 27/14 is -477/280.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 14 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560
Likewise, for the 2nd fraction, since 14 × 40 = 560,
27/14 = 27 × 40/14 × 40 = 1080/560
Subtract the two like fractions:
126/560 - 1080/560 = 126 - 1080/560 = -954/560
After reducing the fraction, the answer is -477/280

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