Answers

Add 21/70 and 54/98

21/70 + 54/98 is 417/490.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 98 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 70 × 7 = 490,
   21/70 = 21 × 7/70 × 7 = 147/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   54/98 = 54 × 5/98 × 5 = 270/490
4. Add the two like fractions:
   147/490 + 270/490 = 147 + 270/490 = 417/490
5. So, 21/70 + 54/98 = 417/490

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