Answers

Add 50/21 and 9/72

1^st number: 2 8/21, 2^nd number: 9/72

50/21 + 9/72 is 421/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 21 × 24 = 504,
   50/21 = 50 × 24/21 × 24 = 1200/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   9/72 = 9 × 7/72 × 7 = 63/504
4. Add the two like fractions:
   1200/504 + 63/504 = 1200 + 63/504 = 1263/504
5. 1263/504 simplified gives 421/168
6. So, 50/21 + 9/72 = 421/168
   In mixed form: 285/168

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