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Add 98/20 and 80/21

1st number: 4 18/20, 2nd number: 3 17/21

98/20 + 80/21 is 1829/210.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    98/20 = 98 × 21/20 × 21 = 2058/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    80/21 = 80 × 20/21 × 20 = 1600/420
  4. Add the two like fractions:
    2058/420 + 1600/420 = 2058 + 1600/420 = 3658/420
  5. 3658/420 simplified gives 1829/210
  6. So, 98/20 + 80/21 = 1829/210
    In mixed form: 8149/210

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