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Add 21/10 and 16/4

1st number: 2 1/10, 2nd number: 4 0/4

21/10 + 16/4 is 61/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    21/10 = 21 × 2/10 × 2 = 42/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    16/4 = 16 × 5/4 × 5 = 80/20
  4. Add the two like fractions:
    42/20 + 80/20 = 42 + 80/20 = 122/20
  5. 122/20 simplified gives 61/10
  6. So, 21/10 + 16/4 = 61/10
    In mixed form: 61/10

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