Answers

Add 24/81 and 90/40

1^st number: 24/81, 2^nd number: 2 10/40

24/81 + 90/40 is 275/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 40 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 81 × 40 = 3240,
   24/81 = 24 × 40/81 × 40 = 960/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   90/40 = 90 × 81/40 × 81 = 7290/3240
4. Add the two like fractions:
   960/3240 + 7290/3240 = 960 + 7290/3240 = 8250/3240
5. 8250/3240 simplified gives 275/108
6. So, 24/81 + 90/40 = 275/108
   In mixed form: 259/108

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