Answers

Add 36/20 and 21/72

1^st number: 1 16/20, 2^nd number: 21/72

36/20 + 21/72 is 251/120.

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,
   36/20 = 36 × 18/20 × 18 = 648/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   21/72 = 21 × 5/72 × 5 = 105/360
4. Add the two like fractions:
   648/360 + 105/360 = 648 + 105/360 = 753/360
5. 753/360 simplified gives 251/120
6. So, 36/20 + 21/72 = 251/120
   In mixed form: 211/120

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