Answers

Add 81/70 and 10/72

1^st number: 1 11/70, 2^nd number: 10/72

81/70 + 10/72 is 1633/1260.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 72 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 70 × 36 = 2520,
   81/70 = 81 × 36/70 × 36 = 2916/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   10/72 = 10 × 35/72 × 35 = 350/2520
4. Add the two like fractions:
   2916/2520 + 350/2520 = 2916 + 350/2520 = 3266/2520
5. 3266/2520 simplified gives 1633/1260
6. So, 81/70 + 10/72 = 1633/1260
   In mixed form: 1373/1260

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