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Add 84/10 and 18/21

1st number: 8 4/10, 2nd number: 18/21

84/10 + 18/21 is 324/35.

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,
    18/21 = 18 × 10/21 × 10 = 180/210
  4. Add the two fractions:
    1764/210 + 180/210 = 1764 + 180/210 = 1944/210
  5. 1944/210 simplified gives 324/35
  6. So, 84/10 + 18/21 = 324/35
    In mixed form: 99/35

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