Answers

Add 81/90 and 90/14

1^st number: 81/90, 2^nd number: 6 6/14

81/90 + 90/14 is 513/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 14 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   81/90 = 81 × 7/90 × 7 = 567/630
3. Likewise, for the 2nd fraction, since 14 × 45 = 630,
   90/14 = 90 × 45/14 × 45 = 4050/630
4. Add the two like fractions:
   567/630 + 4050/630 = 567 + 4050/630 = 4617/630
5. 4617/630 simplified gives 513/70
6. So, 81/90 + 90/14 = 513/70
   In mixed form: 723/70

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