Answers

Add 81/70 and 10/40

1^st number: 1 11/70, 2^nd number: 10/40

81/70 + 10/40 is 197/140.

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,
   81/70 = 81 × 4/70 × 4 = 324/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   10/40 = 10 × 7/40 × 7 = 70/280
4. Add the two like fractions:
   324/280 + 70/280 = 324 + 70/280 = 394/280
5. 394/280 simplified gives 197/140
6. So, 81/70 + 10/40 = 197/140
   In mixed form: 157/140

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