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Add 15/84 and 40/20

1st number: 15/84, 2nd number: 2 0/20

15/84 + 40/20 is 61/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 20 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    15/84 = 15 × 5/84 × 5 = 75/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    40/20 = 40 × 21/20 × 21 = 840/420
  4. Add the two fractions:
    75/420 + 840/420 = 75 + 840/420 = 915/420
  5. 915/420 simplified gives 61/28
  6. So, 15/84 + 40/20 = 61/28
    In mixed form: 25/28

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