Answers

Add 90/84 and 72/7

1^st number: 1 6/84, 2^nd number: 10 2/7

90/84 + 72/7 is 159/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   90/84 = 90 × 1/84 × 1 = 90/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   72/7 = 72 × 12/7 × 12 = 864/84
4. Add the two like fractions:
   90/84 + 864/84 = 90 + 864/84 = 954/84
5. 954/84 simplified gives 159/14
6. So, 90/84 + 72/7 = 159/14
   In mixed form: 115/14

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