Answers

Add 30/63 and 30/70

30/63 + 30/70 is 19/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   30/63 = 30 × 10/63 × 10 = 300/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   30/70 = 30 × 9/70 × 9 = 270/630
4. Add the two like fractions:
   300/630 + 270/630 = 300 + 270/630 = 570/630
5. 570/630 simplified gives 19/21
6. So, 30/63 + 30/70 = 19/21

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