Answers

Add 70/40 and 60/70

1^st number: 1 30/40, 2^nd number: 60/70

70/40 + 60/70 is 73/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   70/40 = 70 × 7/40 × 7 = 490/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   60/70 = 60 × 4/70 × 4 = 240/280
4. Add the two like fractions:
   490/280 + 240/280 = 490 + 240/280 = 730/280
5. 730/280 simplified gives 73/28
6. So, 70/40 + 60/70 = 73/28
   In mixed form: 217/28

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