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Add 45/60 and 16/21

45/60 + 16/21 is 127/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 21 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    45/60 = 45 × 7/60 × 7 = 315/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    16/21 = 16 × 20/21 × 20 = 320/420
  4. Add the two like fractions:
    315/420 + 320/420 = 315 + 320/420 = 635/420
  5. 635/420 simplified gives 127/84
  6. So, 45/60 + 16/21 = 127/84
    In mixed form: 143/84

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