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Add 3/40 and 2/90

3/40 + 2/90 is 7/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 90 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    3/40 = 3 × 9/40 × 9 = 27/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    2/90 = 2 × 4/90 × 4 = 8/360
  4. Add the two fractions:
    27/360 + 8/360 = 27 + 8/360 = 35/360
  5. After reducing the fraction, the answer is 7/72

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