Subtract 90/50 from 27/56, Solve 27/56

Subtract 90/50 from 27/56

1^st number: 27/56, 2^nd number: 1 40/50

27/56 - 90/50 is -369/280.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 50 is 1400

Next, find the equivalent fraction of both fractional numbers with denominator 1400
For the 1st fraction, since 56 × 25 = 1400,
27/56 = 27 × 25/56 × 25 = 675/1400
Likewise, for the 2nd fraction, since 50 × 28 = 1400,
90/50 = 90 × 28/50 × 28 = 2520/1400
Subtract the two like fractions:
675/1400 - 2520/1400 = 675 - 2520/1400 = -1845/1400
After reducing the fraction, the answer is -369/280

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