Answers

Add 90/30 and 72/5

1^st number: 3 0/30, 2^nd number: 14 2/5

90/30 + 72/5 is 87/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 5 is 30
   
   Next, find the equivalent fraction of both fractional numbers with denominator 30
2. For the 1st fraction, since 30 × 1 = 30,
   90/30 = 90 × 1/30 × 1 = 90/30
3. Likewise, for the 2nd fraction, since 5 × 6 = 30,
   72/5 = 72 × 6/5 × 6 = 432/30
4. Add the two like fractions:
   90/30 + 432/30 = 90 + 432/30 = 522/30
5. 522/30 simplified gives 87/5
6. So, 90/30 + 72/5 = 87/5
   In mixed form: 172/5

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