Answers

Add 4/70 and 63/81

4/70 + 63/81 is 263/315.

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,
   4/70 = 4 × 81/70 × 81 = 324/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   63/81 = 63 × 70/81 × 70 = 4410/5670
4. Add the two like fractions:
   324/5670 + 4410/5670 = 324 + 4410/5670 = 4734/5670
5. 4734/5670 simplified gives 263/315
6. So, 4/70 + 63/81 = 263/315

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