Answers

Subtract 42/81 from 56/40

1^st number: 1 16/40, 2^nd number: 42/81

56/40 - 42/81 is 119/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 81 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 40 × 81 = 3240,
   56/40 = 56 × 81/40 × 81 = 4536/3240
3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
   42/81 = 42 × 40/81 × 40 = 1680/3240
4. Subtract the two like fractions:
   4536/3240 - 1680/3240 = 4536 - 1680/3240 = 2856/3240
5. After reducing the fraction, the answer is 119/135

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