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Add 7/90 and 4/72

7/90 + 4/72 is 2/15.

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,
    7/90 = 7 × 4/90 × 4 = 28/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    4/72 = 4 × 5/72 × 5 = 20/360
  4. Add the two like fractions:
    28/360 + 20/360 = 28 + 20/360 = 48/360
  5. 48/360 simplified gives 2/15
  6. So, 7/90 + 4/72 = 2/15

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