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Add 18/40 and 15/45

18/40 + 15/45 is 47/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 45 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    18/40 = 18 × 9/40 × 9 = 162/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    15/45 = 15 × 8/45 × 8 = 120/360
  4. Add the two like fractions:
    162/360 + 120/360 = 162 + 120/360 = 282/360
  5. 282/360 simplified gives 47/60
  6. So, 18/40 + 15/45 = 47/60

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