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Add 21/12 and 75/10

1st number: 1 9/12, 2nd number: 7 5/10

21/12 + 75/10 is 37/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 10 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    21/12 = 21 × 5/12 × 5 = 105/60
  3. Likewise, for the 2nd fraction, since 10 × 6 = 60,
    75/10 = 75 × 6/10 × 6 = 450/60
  4. Add the two like fractions:
    105/60 + 450/60 = 105 + 450/60 = 555/60
  5. 555/60 simplified gives 37/4
  6. So, 21/12 + 75/10 = 37/4
    In mixed form: 91/4

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