Answers

Add 84/20 and 15/72

1^st number: 4 4/20, 2^nd number: 15/72

84/20 + 15/72 is 529/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 20 × 18 = 360,
   84/20 = 84 × 18/20 × 18 = 1512/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   15/72 = 15 × 5/72 × 5 = 75/360
4. Add the two like fractions:
   1512/360 + 75/360 = 1512 + 75/360 = 1587/360
5. 1587/360 simplified gives 529/120
6. So, 84/20 + 15/72 = 529/120
   In mixed form: 449/120

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