Answers

Add 54/21 and 70/72

1^st number: 2 12/21, 2^nd number: 70/72

54/21 + 70/72 is 893/252.

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,
   54/21 = 54 × 24/21 × 24 = 1296/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   70/72 = 70 × 7/72 × 7 = 490/504
4. Add the two like fractions:
   1296/504 + 490/504 = 1296 + 490/504 = 1786/504
5. 1786/504 simplified gives 893/252
6. So, 54/21 + 70/72 = 893/252
   In mixed form: 3137/252

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