Answers

Add 45/70 and 70/81

45/70 + 70/81 is 1709/1134.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 81 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 70 × 81 = 5670,
   45/70 = 45 × 81/70 × 81 = 3645/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   70/81 = 70 × 70/81 × 70 = 4900/5670
4. Add the two like fractions:
   3645/5670 + 4900/5670 = 3645 + 4900/5670 = 8545/5670
5. 8545/5670 simplified gives 1709/1134
6. So, 45/70 + 70/81 = 1709/1134
   In mixed form: 1575/1134

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