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Add 40/72 and 84/90

40/72 + 84/90 is 67/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 90 is 360
  2. For the 1st fraction, since 72 × 5 = 360,
    40/72 = 40 × 5/72 × 5 = 200/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    84/90 = 84 × 4/90 × 4 = 336/360
  4. Add the two fractions:
    200/360 + 336/360 = 200 + 336/360 = 536/360
  5. After reducing the fraction, the answer is 67/45
  6. In mixed form: 122/45

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