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Add 84/10 and 30/21

1st number: 8 4/10, 2nd number: 1 9/21

84/10 + 30/21 is 344/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 21 is 210
  2. For the 1st fraction, since 10 × 21 = 210,
    84/10 = 84 × 21/10 × 21 = 1764/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    30/21 = 30 × 10/21 × 10 = 300/210
  4. Add the two fractions:
    1764/210 + 300/210 = 1764 + 300/210 = 2064/210
  5. 2064/210 simplified gives 344/35
  6. So, 84/10 + 30/21 = 344/35
    In mixed form: 929/35

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