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Add 42/20 and 10/90

1st number: 2 2/20, 2nd number: 10/90

42/20 + 10/90 is 199/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    42/20 = 42 × 9/20 × 9 = 378/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    10/90 = 10 × 2/90 × 2 = 20/180
  4. Add the two like fractions:
    378/180 + 20/180 = 378 + 20/180 = 398/180
  5. 398/180 simplified gives 199/90
  6. So, 42/20 + 10/90 = 199/90
    In mixed form: 219/90

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