Answers

Add 3/70 and 70/90

3/70 + 70/90 is 517/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   3/70 = 3 × 9/70 × 9 = 27/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   70/90 = 70 × 7/90 × 7 = 490/630
4. Add the two like fractions:
   27/630 + 490/630 = 27 + 490/630 = 517/630
5. So, 3/70 + 70/90 = 517/630

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