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Add 75/21 and 35/80

1st number: 3 12/21, 2nd number: 35/80

75/21 + 35/80 is 449/112.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    75/21 = 75 × 80/21 × 80 = 6000/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    35/80 = 35 × 21/80 × 21 = 735/1680
  4. Add the two fractions:
    6000/1680 + 735/1680 = 6000 + 735/1680 = 6735/1680
  5. 6735/1680 simplified gives 449/112
  6. So, 75/21 + 35/80 = 449/112
    In mixed form: 41/112

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