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Add 28/10 and 7/5

1st number: 2 8/10, 2nd number: 1 2/5

28/10 + 7/5 is 21/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 5 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 10 × 1 = 10,
    28/10 = 28 × 1/10 × 1 = 28/10
  3. Likewise, for the 2nd fraction, since 5 × 2 = 10,
    7/5 = 7 × 2/5 × 2 = 14/10
  4. Add the two like fractions:
    28/10 + 14/10 = 28 + 14/10 = 42/10
  5. 42/10 simplified gives 21/5
  6. So, 28/10 + 7/5 = 21/5
    In mixed form: 41/5

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