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Add 64/20 and 1/90

1st number: 3 4/20, 2nd number: 1/90

64/20 + 1/90 is 289/90.

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,
    64/20 = 64 × 9/20 × 9 = 576/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    1/90 = 1 × 2/90 × 2 = 2/180
  4. Add the two like fractions:
    576/180 + 2/180 = 576 + 2/180 = 578/180
  5. 578/180 simplified gives 289/90
  6. So, 64/20 + 1/90 = 289/90
    In mixed form: 319/90

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