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Add 40/80 and 6/90

40/80 + 6/90 is 17/30.

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,
    6/90 = 6 × 8/90 × 8 = 48/720
  4. Add the two like fractions:
    360/720 + 48/720 = 360 + 48/720 = 408/720
  5. 408/720 simplified gives 17/30
  6. So, 40/80 + 6/90 = 17/30

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