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Add 28/5 and 90/72

1st number: 5 3/5, 2nd number: 1 18/72

28/5 + 90/72 is 137/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 5 × 72 = 360,
    28/5 = 28 × 72/5 × 72 = 2016/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    90/72 = 90 × 5/72 × 5 = 450/360
  4. Add the two like fractions:
    2016/360 + 450/360 = 2016 + 450/360 = 2466/360
  5. 2466/360 simplified gives 137/20
  6. So, 28/5 + 90/72 = 137/20
    In mixed form: 617/20

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