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Add 21/10 and 2/5

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

21/10 + 2/5 is 5/2.

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,
    21/10 = 21 × 1/10 × 1 = 21/10
  3. Likewise, for the 2nd fraction, since 5 × 2 = 10,
    2/5 = 2 × 2/5 × 2 = 4/10
  4. Add the two like fractions:
    21/10 + 4/10 = 21 + 4/10 = 25/10
  5. 25/10 simplified gives 5/2
  6. So, 21/10 + 2/5 = 5/2
    In mixed form: 21/2

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