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Add 20/15 and 98/21

1st number: 1 5/15, 2nd number: 4 14/21

20/15 + 98/21 is 6/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    20/15 = 20 × 7/15 × 7 = 140/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    98/21 = 98 × 5/21 × 5 = 490/105
  4. Add the two like fractions:
    140/105 + 490/105 = 140 + 490/105 = 630/105
  5. 630/105 simplified gives 6/1
  6. So, 20/15 + 98/21 = 6/1

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