Answers

Subtract 70/9 from 81/40

1^st number: 2 1/40, 2^nd number: 7 7/9

81/40 - 70/9 is -2071/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 9 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   81/40 = 81 × 9/40 × 9 = 729/360
3. Likewise, for the 2nd fraction, since 9 × 40 = 360,
   70/9 = 70 × 40/9 × 40 = 2800/360
4. Subtract the two like fractions:
   729/360 - 2800/360 = 729 - 2800/360 = -2071/360

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