Answers

Add 81/45 and 10/80

1^st number: 1 36/45, 2^nd number: 10/80

81/45 + 10/80 is 77/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   81/45 = 81 × 16/45 × 16 = 1296/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   10/80 = 10 × 9/80 × 9 = 90/720
4. Add the two like fractions:
   1296/720 + 90/720 = 1296 + 90/720 = 1386/720
5. 1386/720 simplified gives 77/40
6. So, 81/45 + 10/80 = 77/40
   In mixed form: 137/40

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