Answers

Add 70/60 and 18/84

1^st number: 1 10/60, 2^nd number: 18/84

70/60 + 18/84 is 29/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   70/60 = 70 × 7/60 × 7 = 490/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   18/84 = 18 × 5/84 × 5 = 90/420
4. Add the two like fractions:
   490/420 + 90/420 = 490 + 90/420 = 580/420
5. 580/420 simplified gives 29/21
6. So, 70/60 + 18/84 = 29/21
   In mixed form: 18/21

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