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Add 15/40 and 30/84

15/40 + 30/84 is 41/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840
  2. For the 1st fraction, since 40 × 21 = 840,
    15/40 = 15 × 21/40 × 21 = 315/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    30/84 = 30 × 10/84 × 10 = 300/840
  4. Add the two fractions:
    315/840 + 300/840 = 315 + 300/840 = 615/840
  5. 615/840 simplified gives 41/56
  6. So, 15/40 + 30/84 = 41/56

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