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Add 21/40 and 16/30

21/40 + 16/30 is 127/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 30 is 120
  2. For the 1st fraction, since 40 × 3 = 120,
    21/40 = 21 × 3/40 × 3 = 63/120
  3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
    16/30 = 16 × 4/30 × 4 = 64/120
  4. Add the two fractions:
    63/120 + 64/120 = 63 + 64/120 = 127/120
  5. In mixed form: 17/120

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