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Add 18/21 and 98/20

1st number: 18/21, 2nd number: 4 18/20

18/21 + 98/20 is 403/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    18/21 = 18 × 20/21 × 20 = 360/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    98/20 = 98 × 21/20 × 21 = 2058/420
  4. Add the two like fractions:
    360/420 + 2058/420 = 360 + 2058/420 = 2418/420
  5. 2418/420 simplified gives 403/70
  6. So, 18/21 + 98/20 = 403/70
    In mixed form: 553/70

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