Answers

Add 15/12 and 70/90

1^st number: 1 3/12, 2^nd number: 70/90

15/12 + 70/90 is 73/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 12 × 15 = 180,
   15/12 = 15 × 15/12 × 15 = 225/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   70/90 = 70 × 2/90 × 2 = 140/180
4. Add the two like fractions:
   225/180 + 140/180 = 225 + 140/180 = 365/180
5. 365/180 simplified gives 73/36
6. So, 15/12 + 70/90 = 73/36
   In mixed form: 21/36

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