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Add 21/40 and 30/50

21/40 + 30/50 is 9/8.

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,
    30/50 = 30 × 4/50 × 4 = 120/200
  4. Add the two like fractions:
    105/200 + 120/200 = 105 + 120/200 = 225/200
  5. 225/200 simplified gives 9/8
  6. So, 21/40 + 30/50 = 9/8
    In mixed form: 11/8

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