Answers

Add 21/7 and 70/72

1^st number: 3 0/7, 2^nd number: 70/72

21/7 + 70/72 is 143/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 7 × 72 = 504,
   21/7 = 21 × 72/7 × 72 = 1512/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   70/72 = 70 × 7/72 × 7 = 490/504
4. Add the two like fractions:
   1512/504 + 490/504 = 1512 + 490/504 = 2002/504
5. 2002/504 simplified gives 143/36
6. So, 21/7 + 70/72 = 143/36
   In mixed form: 335/36

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