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Add 8/9 and 15/40

8/9 + 15/40 is 91/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 9 × 40 = 360,
    8/9 = 8 × 40/9 × 40 = 320/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    15/40 = 15 × 9/40 × 9 = 135/360
  4. Add the two like fractions:
    320/360 + 135/360 = 320 + 135/360 = 455/360
  5. 455/360 simplified gives 91/72
  6. So, 8/9 + 15/40 = 91/72
    In mixed form: 119/72

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