Subtract 49/54 from 81/40, Solve 2 1/40

Subtract 49/54 from 81/40

1^st number: 2 1/40, 2^nd number: 49/54

81/40 - 49/54 is 1207/1080.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080

Next, find the equivalent fraction of both fractional numbers with denominator 1080
For the 1st fraction, since 40 × 27 = 1080,
81/40 = 81 × 27/40 × 27 = 2187/1080
Likewise, for the 2nd fraction, since 54 × 20 = 1080,
49/54 = 49 × 20/54 × 20 = 980/1080
Subtract the two like fractions:
2187/1080 - 980/1080 = 2187 - 980/1080 = 1207/1080
In mixed form: 1127/1080

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