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Add 70/90 and 18/72

70/90 + 18/72 is 37/36.

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,
    70/90 = 70 × 4/90 × 4 = 280/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    18/72 = 18 × 5/72 × 5 = 90/360
  4. Add the two like fractions:
    280/360 + 90/360 = 280 + 90/360 = 370/360
  5. 370/360 simplified gives 37/36
  6. So, 70/90 + 18/72 = 37/36
    In mixed form: 11/36

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