Answers

Add 70/12 and 45/20

1^st number: 5 10/12, 2^nd number: 2 5/20

70/12 + 45/20 is 97/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 12 × 5 = 60,
   70/12 = 70 × 5/12 × 5 = 350/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   45/20 = 45 × 3/20 × 3 = 135/60
4. Add the two like fractions:
   350/60 + 135/60 = 350 + 135/60 = 485/60
5. 485/60 simplified gives 97/12
6. So, 70/12 + 45/20 = 97/12
   In mixed form: 81/12

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