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Add 1/90 and 90/72

1st number: 1/90, 2nd number: 1 18/72

1/90 + 90/72 is 227/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    1/90 = 1 × 4/90 × 4 = 4/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    90/72 = 90 × 5/72 × 5 = 450/360
  4. Add the two like fractions:
    4/360 + 450/360 = 4 + 450/360 = 454/360
  5. 454/360 simplified gives 227/180
  6. So, 1/90 + 90/72 = 227/180
    In mixed form: 147/180

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