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Add 21/36 and 42/50

21/36 + 42/50 is 427/300.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 50 is 900
  2. For the 1st fraction, since 36 × 25 = 900,
    21/36 = 21 × 25/36 × 25 = 525/900
  3. Likewise, for the 2nd fraction, since 50 × 18 = 900,
    42/50 = 42 × 18/50 × 18 = 756/900
  4. Add the two fractions:
    525/900 + 756/900 = 525 + 756/900 = 1281/900
  5. 1281/900 simplified gives 427/300
  6. So, 21/36 + 42/50 = 427/300
    In mixed form: 1127/300

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