Subtract 42/18 from 27/49, Solve 27/49

Subtract 42/18 from 27/49

1^st number: 27/49, 2^nd number: 2 6/18

27/49 - 42/18 is -262/147.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 49 × 18 = 882,
27/49 = 27 × 18/49 × 18 = 486/882
Likewise, for the 2nd fraction, since 18 × 49 = 882,
42/18 = 42 × 49/18 × 49 = 2058/882
Subtract the two like fractions:
486/882 - 2058/882 = 486 - 2058/882 = -1572/882
After reducing the fraction, the answer is -262/147

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