Answers

Add 63/70 and 81/40

1^st number: 63/70, 2^nd number: 2 1/40

63/70 + 81/40 is 117/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   63/70 = 63 × 4/70 × 4 = 252/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   81/40 = 81 × 7/40 × 7 = 567/280
4. Add the two like fractions:
   252/280 + 567/280 = 252 + 567/280 = 819/280
5. 819/280 simplified gives 117/40
6. So, 63/70 + 81/40 = 117/40
   In mixed form: 237/40

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