Subtract 63/49 from 27/40, Solve 27/40

Subtract 63/49 from 27/40

1^st number: 27/40, 2^nd number: 1 14/49

27/40 - 63/49 is -171/280.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 49 is 1960

Next, find the equivalent fraction of both fractional numbers with denominator 1960
For the 1st fraction, since 40 × 49 = 1960,
27/40 = 27 × 49/40 × 49 = 1323/1960
Likewise, for the 2nd fraction, since 49 × 40 = 1960,
63/49 = 63 × 40/49 × 40 = 2520/1960
Subtract the two like fractions:
1323/1960 - 2520/1960 = 1323 - 2520/1960 = -1197/1960
After reducing the fraction, the answer is -171/280

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