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Add 36/40 and 21/60

36/40 + 21/60 is 5/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 60 is 120
  2. For the 1st fraction, since 40 × 3 = 120,
    36/40 = 36 × 3/40 × 3 = 108/120
  3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
    21/60 = 21 × 2/60 × 2 = 42/120
  4. Add the two fractions:
    108/120 + 42/120 = 108 + 42/120 = 150/120
  5. 150/120 simplified gives 5/4
  6. So, 36/40 + 21/60 = 5/4
    In mixed form: 11/4

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