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Add 60/21 and 90/80

1st number: 2 18/21, 2nd number: 1 10/80

60/21 + 90/80 is 223/56.

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,
    60/21 = 60 × 80/21 × 80 = 4800/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    90/80 = 90 × 21/80 × 21 = 1890/1680
  4. Add the two fractions:
    4800/1680 + 1890/1680 = 4800 + 1890/1680 = 6690/1680
  5. After reducing the fraction, the answer is 223/56
  6. In mixed form: 355/56

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