Answers

Add 81/70 and 18/84

1^st number: 1 11/70, 2^nd number: 18/84

81/70 + 18/84 is 48/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 70 × 6 = 420,
   81/70 = 81 × 6/70 × 6 = 486/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   18/84 = 18 × 5/84 × 5 = 90/420
4. Add the two like fractions:
   486/420 + 90/420 = 486 + 90/420 = 576/420
5. 576/420 simplified gives 48/35
6. So, 81/70 + 18/84 = 48/35
   In mixed form: 113/35

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