Answers

Add 81/64 and 56/70

1^st number: 1 17/64, 2^nd number: 56/70

81/64 + 56/70 is 661/320.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 70 is 2240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2240
2. For the 1st fraction, since 64 × 35 = 2240,
   81/64 = 81 × 35/64 × 35 = 2835/2240
3. Likewise, for the 2nd fraction, since 70 × 32 = 2240,
   56/70 = 56 × 32/70 × 32 = 1792/2240
4. Add the two like fractions:
   2835/2240 + 1792/2240 = 2835 + 1792/2240 = 4627/2240
5. 4627/2240 simplified gives 661/320
6. So, 81/64 + 56/70 = 661/320
   In mixed form: 221/320

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