Answers

Add 70/63 and 40/64

1^st number: 1 7/63, 2^nd number: 40/64

70/63 + 40/64 is 125/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 64 is 4032
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4032
2. For the 1st fraction, since 63 × 64 = 4032,
   70/63 = 70 × 64/63 × 64 = 4480/4032
3. Likewise, for the 2nd fraction, since 64 × 63 = 4032,
   40/64 = 40 × 63/64 × 63 = 2520/4032
4. Add the two like fractions:
   4480/4032 + 2520/4032 = 4480 + 2520/4032 = 7000/4032
5. 7000/4032 simplified gives 125/72
6. So, 70/63 + 40/64 = 125/72
   In mixed form: 153/72

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