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Add 20/40 and 36/45

20/40 + 36/45 is 13/10.

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,
    20/40 = 20 × 9/40 × 9 = 180/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    36/45 = 36 × 8/45 × 8 = 288/360
  4. Add the two like fractions:
    180/360 + 288/360 = 180 + 288/360 = 468/360
  5. 468/360 simplified gives 13/10
  6. So, 20/40 + 36/45 = 13/10
    In mixed form: 13/10

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