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Add 40/10 and 21/80

1st number: 4 0/10, 2nd number: 21/80

40/10 + 21/80 is 341/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 80 is 80
  2. For the 1st fraction, since 10 × 8 = 80,
    40/10 = 40 × 8/10 × 8 = 320/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    21/80 = 21 × 1/80 × 1 = 21/80
  4. Add the two fractions:
    320/80 + 21/80 = 320 + 21/80 = 341/80
  5. In mixed form: 421/80

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