Answers

Add 40/27 and 90/80

1^st number: 1 13/27, 2^nd number: 1 10/80

40/27 + 90/80 is 563/216.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 27 × 80 = 2160,
   40/27 = 40 × 80/27 × 80 = 3200/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   90/80 = 90 × 27/80 × 27 = 2430/2160
4. Add the two like fractions:
   3200/2160 + 2430/2160 = 3200 + 2430/2160 = 5630/2160
5. 5630/2160 simplified gives 563/216
6. So, 40/27 + 90/80 = 563/216
   In mixed form: 2131/216

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