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Add 21/10 and 12/28

1st number: 2 1/10, 2nd number: 12/28

21/10 + 12/28 is 177/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 28 is 140
  2. For the 1st fraction, since 10 × 14 = 140,
    21/10 = 21 × 14/10 × 14 = 294/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    12/28 = 12 × 5/28 × 5 = 60/140
  4. Add the two fractions:
    294/140 + 60/140 = 294 + 60/140 = 354/140
  5. After reducing the fraction, the answer is 177/70
  6. In mixed form: 237/70

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