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Add 12/10 and 18/21

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

12/10 + 18/21 is 72/35.

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,
    12/10 = 12 × 21/10 × 21 = 252/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    18/21 = 18 × 10/21 × 10 = 180/210
  4. Add the two fractions:
    252/210 + 180/210 = 252 + 180/210 = 432/210
  5. 432/210 simplified gives 72/35
  6. So, 12/10 + 18/21 = 72/35
    In mixed form: 22/35

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