Answers

Add 42/84 and 81/70

1^st number: 42/84, 2^nd number: 1 11/70

42/84 + 81/70 is 58/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   42/84 = 42 × 5/84 × 5 = 210/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   81/70 = 81 × 6/70 × 6 = 486/420
4. Add the two like fractions:
   210/420 + 486/420 = 210 + 486/420 = 696/420
5. 696/420 simplified gives 58/35
6. So, 42/84 + 81/70 = 58/35
   In mixed form: 123/35

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