Answers

Add 49/70 and 42/81

49/70 + 42/81 is 329/270.

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,
   49/70 = 49 × 81/70 × 81 = 3969/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   42/81 = 42 × 70/81 × 70 = 2940/5670
4. Add the two like fractions:
   3969/5670 + 2940/5670 = 3969 + 2940/5670 = 6909/5670
5. 6909/5670 simplified gives 329/270
6. So, 49/70 + 42/81 = 329/270
   In mixed form: 159/270

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