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Add 16/40 and 20/72

16/40 + 20/72 is 61/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    16/40 = 16 × 9/40 × 9 = 144/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  4. Add the two like fractions:
    144/360 + 100/360 = 144 + 100/360 = 244/360
  5. 244/360 simplified gives 61/90
  6. So, 16/40 + 20/72 = 61/90

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