Answers

Add 84/20 and 30/56

1^st number: 4 4/20, 2^nd number: 30/56

84/20 + 30/56 is 663/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 56 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 20 × 14 = 280,
   84/20 = 84 × 14/20 × 14 = 1176/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   30/56 = 30 × 5/56 × 5 = 150/280
4. Add the two like fractions:
   1176/280 + 150/280 = 1176 + 150/280 = 1326/280
5. 1326/280 simplified gives 663/140
6. So, 84/20 + 30/56 = 663/140
   In mixed form: 4103/140

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