Answers

Add 84/7 and 56/20

1^st number: 12 0/7, 2^nd number: 2 16/20

84/7 + 56/20 is 74/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 7 × 20 = 140,
   84/7 = 84 × 20/7 × 20 = 1680/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   56/20 = 56 × 7/20 × 7 = 392/140
4. Add the two like fractions:
   1680/140 + 392/140 = 1680 + 392/140 = 2072/140
5. 2072/140 simplified gives 74/5
6. So, 84/7 + 56/20 = 74/5
   In mixed form: 144/5

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