Subtract 2/30 from 81/40, Solve 2 1/40

Subtract 2/30 from 81/40

1^st number: 2 1/40, 2^nd number: 2/30

81/40 - 2/30 is 47/24.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120
Likewise, for the 2nd fraction, since 30 × 4 = 120,
2/30 = 2 × 4/30 × 4 = 8/120
Subtract the two like fractions:
243/120 - 8/120 = 243 - 8/120 = 235/120
After reducing the fraction, the answer is 47/24
In mixed form: 123/24

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