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Add 45/90 and 80/40

1st number: 45/90, 2nd number: 2 0/40

45/90 + 80/40 is 5/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    45/90 = 45 × 4/90 × 4 = 180/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    80/40 = 80 × 9/40 × 9 = 720/360
  4. Add the two like fractions:
    180/360 + 720/360 = 180 + 720/360 = 900/360
  5. 900/360 simplified gives 5/2
  6. So, 45/90 + 80/40 = 5/2
    In mixed form: 21/2

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