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Add 42/75 and 21/10

1st number: 42/75, 2nd number: 2 1/10

42/75 + 21/10 is 133/50.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 10 is 150

    Next, find the equivalent fraction of both fractional numbers with denominator 150
  2. For the 1st fraction, since 75 × 2 = 150,
    42/75 = 42 × 2/75 × 2 = 84/150
  3. Likewise, for the 2nd fraction, since 10 × 15 = 150,
    21/10 = 21 × 15/10 × 15 = 315/150
  4. Add the two like fractions:
    84/150 + 315/150 = 84 + 315/150 = 399/150
  5. 399/150 simplified gives 133/50
  6. So, 42/75 + 21/10 = 133/50
    In mixed form: 233/50

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