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Add 72/90 and 45/20

1st number: 72/90, 2nd number: 2 5/20

72/90 + 45/20 is 61/20.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    72/90 = 72 × 2/90 × 2 = 144/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    45/20 = 45 × 9/20 × 9 = 405/180
  4. Add the two like fractions:
    144/180 + 405/180 = 144 + 405/180 = 549/180
  5. 549/180 simplified gives 61/20
  6. So, 72/90 + 45/20 = 61/20
    In mixed form: 31/20

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