Answers

Add 42/15 and 56/64

1^st number: 2 12/15, 2^nd number: 56/64

42/15 + 56/64 is 147/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 64 is 960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 960
2. For the 1st fraction, since 15 × 64 = 960,
   42/15 = 42 × 64/15 × 64 = 2688/960
3. Likewise, for the 2nd fraction, since 64 × 15 = 960,
   56/64 = 56 × 15/64 × 15 = 840/960
4. Add the two like fractions:
   2688/960 + 840/960 = 2688 + 840/960 = 3528/960
5. 3528/960 simplified gives 147/40
6. So, 42/15 + 56/64 = 147/40
   In mixed form: 327/40

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