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Add 45/75 and 72/90

45/75 + 72/90 is 7/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 90 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 75 × 6 = 450,
    45/75 = 45 × 6/75 × 6 = 270/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    72/90 = 72 × 5/90 × 5 = 360/450
  4. Add the two like fractions:
    270/450 + 360/450 = 270 + 360/450 = 630/450
  5. 630/450 simplified gives 7/5
  6. So, 45/75 + 72/90 = 7/5
    In mixed form: 12/5

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