Answers

Add 30/98 and 7/20

30/98 + 7/20 is 643/980.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 98 × 10 = 980,
   30/98 = 30 × 10/98 × 10 = 300/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   7/20 = 7 × 49/20 × 49 = 343/980
4. Add the two like fractions:
   300/980 + 343/980 = 300 + 343/980 = 643/980
5. So, 30/98 + 7/20 = 643/980

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