Answers

Add 21/64 and 72/30

1^st number: 21/64, 2^nd number: 2 12/30

21/64 + 72/30 is 873/320.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 30 is 960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 960
2. For the 1st fraction, since 64 × 15 = 960,
   21/64 = 21 × 15/64 × 15 = 315/960
3. Likewise, for the 2nd fraction, since 30 × 32 = 960,
   72/30 = 72 × 32/30 × 32 = 2304/960
4. Add the two like fractions:
   315/960 + 2304/960 = 315 + 2304/960 = 2619/960
5. 2619/960 simplified gives 873/320
6. So, 21/64 + 72/30 = 873/320
   In mixed form: 2233/320

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