Answers

Add 63/70 and 20/12

1^st number: 63/70, 2^nd number: 1 8/12

63/70 + 20/12 is 77/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 12 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 70 × 6 = 420,
   63/70 = 63 × 6/70 × 6 = 378/420
3. Likewise, for the 2nd fraction, since 12 × 35 = 420,
   20/12 = 20 × 35/12 × 35 = 700/420
4. Add the two like fractions:
   378/420 + 700/420 = 378 + 700/420 = 1078/420
5. 1078/420 simplified gives 77/30
6. So, 63/70 + 20/12 = 77/30
   In mixed form: 217/30

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