Subtract 81/49 from 27/72, Solve 27/72

Subtract 81/49 from 27/72

1^st number: 27/72, 2^nd number: 1 32/49

27/72 - 81/49 is -501/392.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 72 × 49 = 3528,
27/72 = 27 × 49/72 × 49 = 1323/3528
Likewise, for the 2nd fraction, since 49 × 72 = 3528,
81/49 = 81 × 72/49 × 72 = 5832/3528
Subtract the two like fractions:
1323/3528 - 5832/3528 = 1323 - 5832/3528 = -4509/3528
After reducing the fraction, the answer is -501/392

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