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Add 7/20 and 21/98

7/20 + 21/98 is 79/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 98 is 980

    Next, find the equivalent fraction of both fractional numbers with denominator 980
  2. For the 1st fraction, since 20 × 49 = 980,
    7/20 = 7 × 49/20 × 49 = 343/980
  3. Likewise, for the 2nd fraction, since 98 × 10 = 980,
    21/98 = 21 × 10/98 × 10 = 210/980
  4. Add the two like fractions:
    343/980 + 210/980 = 343 + 210/980 = 553/980
  5. 553/980 simplified gives 79/140
  6. So, 7/20 + 21/98 = 79/140

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