Answers

Add 72/42 and 8/90

1^st number: 1 30/42, 2^nd number: 8/90

72/42 + 8/90 is 568/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   72/42 = 72 × 15/42 × 15 = 1080/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   8/90 = 8 × 7/90 × 7 = 56/630
4. Add the two like fractions:
   1080/630 + 56/630 = 1080 + 56/630 = 1136/630
5. 1136/630 simplified gives 568/315
6. So, 72/42 + 8/90 = 568/315
   In mixed form: 1253/315

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