Answers

Add 18/36 and 56/21

1^st number: 18/36, 2^nd number: 2 14/21

18/36 + 56/21 is 19/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 21 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 36 × 7 = 252,
   18/36 = 18 × 7/36 × 7 = 126/252
3. Likewise, for the 2nd fraction, since 21 × 12 = 252,
   56/21 = 56 × 12/21 × 12 = 672/252
4. Add the two like fractions:
   126/252 + 672/252 = 126 + 672/252 = 798/252
5. 798/252 simplified gives 19/6
6. So, 18/36 + 56/21 = 19/6
   In mixed form: 31/6

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