Answers

Add 70/72 and 50/21

1^st number: 70/72, 2^nd number: 2 8/21

70/72 + 50/21 is 845/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 21 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   70/72 = 70 × 7/72 × 7 = 490/504
3. Likewise, for the 2nd fraction, since 21 × 24 = 504,
   50/21 = 50 × 24/21 × 24 = 1200/504
4. Add the two like fractions:
   490/504 + 1200/504 = 490 + 1200/504 = 1690/504
5. 1690/504 simplified gives 845/252
6. So, 70/72 + 50/21 = 845/252
   In mixed form: 389/252

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