Subtract 21/27 from 81/50, Solve 1 31/50

Subtract 21/27 from 81/50

1^st number: 1 31/50, 2^nd number: 21/27

81/50 - 21/27 is 379/450.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 27 is 1350

Next, find the equivalent fraction of both fractional numbers with denominator 1350
For the 1st fraction, since 50 × 27 = 1350,
81/50 = 81 × 27/50 × 27 = 2187/1350
Likewise, for the 2nd fraction, since 27 × 50 = 1350,
21/27 = 21 × 50/27 × 50 = 1050/1350
Subtract the two like fractions:
2187/1350 - 1050/1350 = 2187 - 1050/1350 = 1137/1350
After reducing the fraction, the answer is 379/450

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