Answers

Add 27/15 and 70/80

1^st number: 1 12/15, 2^nd number: 70/80

27/15 + 70/80 is 107/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 15 × 16 = 240,
   27/15 = 27 × 16/15 × 16 = 432/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   70/80 = 70 × 3/80 × 3 = 210/240
4. Add the two like fractions:
   432/240 + 210/240 = 432 + 210/240 = 642/240
5. 642/240 simplified gives 107/40
6. So, 27/15 + 70/80 = 107/40
   In mixed form: 227/40

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