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Add 4/12 and 21/80

4/12 + 21/80 is 143/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 12 × 20 = 240,
    4/12 = 4 × 20/12 × 20 = 80/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    21/80 = 21 × 3/80 × 3 = 63/240
  4. Add the two like fractions:
    80/240 + 63/240 = 80 + 63/240 = 143/240
  5. So, 4/12 + 21/80 = 143/240

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