Answers

Add 3/84 and 56/20

1^st number: 3/84, 2^nd number: 2 16/20

3/84 + 56/20 is 397/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   3/84 = 3 × 5/84 × 5 = 15/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   56/20 = 56 × 21/20 × 21 = 1176/420
4. Add the two like fractions:
   15/420 + 1176/420 = 15 + 1176/420 = 1191/420
5. 1191/420 simplified gives 397/140
6. So, 3/84 + 56/20 = 397/140
   In mixed form: 2117/140

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