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Add 40/80 and 36/90

40/80 + 36/90 is 9/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 90 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    40/80 = 40 × 9/80 × 9 = 360/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    36/90 = 36 × 8/90 × 8 = 288/720
  4. Add the two like fractions:
    360/720 + 288/720 = 360 + 288/720 = 648/720
  5. 648/720 simplified gives 9/10
  6. So, 40/80 + 36/90 = 9/10

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