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Add 21/40 and 20/50

21/40 + 20/50 is 37/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 50 is 200

    Next, find the equivalent fraction of both fractional numbers with denominator 200
  2. For the 1st fraction, since 40 × 5 = 200,
    21/40 = 21 × 5/40 × 5 = 105/200
  3. Likewise, for the 2nd fraction, since 50 × 4 = 200,
    20/50 = 20 × 4/50 × 4 = 80/200
  4. Add the two like fractions:
    105/200 + 80/200 = 105 + 80/200 = 185/200
  5. 185/200 simplified gives 37/40
  6. So, 21/40 + 20/50 = 37/40

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