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Add 21/10 and 12/42

1st number: 2 1/10, 2nd number: 12/42

21/10 + 12/42 is 167/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 42 is 210
  2. For the 1st fraction, since 10 × 21 = 210,
    21/10 = 21 × 21/10 × 21 = 441/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    12/42 = 12 × 5/42 × 5 = 60/210
  4. Add the two fractions:
    441/210 + 60/210 = 441 + 60/210 = 501/210
  5. After reducing the fraction, the answer is 167/70
  6. In mixed form: 227/70

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