Answers

Add 90/14 and 15/72

1^st number: 6 6/14, 2^nd number: 15/72

90/14 + 15/72 is 1115/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 14 × 36 = 504,
   90/14 = 90 × 36/14 × 36 = 3240/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   15/72 = 15 × 7/72 × 7 = 105/504
4. Add the two like fractions:
   3240/504 + 105/504 = 3240 + 105/504 = 3345/504
5. 3345/504 simplified gives 1115/168
6. So, 90/14 + 15/72 = 1115/168
   In mixed form: 6107/168

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