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Add 72/18 and 45/30

1st number: 4 0/18, 2nd number: 1 15/30

72/18 + 45/30 is 11/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 30 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    72/18 = 72 × 5/18 × 5 = 360/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    45/30 = 45 × 3/30 × 3 = 135/90
  4. Add the two like fractions:
    360/90 + 135/90 = 360 + 135/90 = 495/90
  5. 495/90 simplified gives 11/2
  6. So, 72/18 + 45/30 = 11/2
    In mixed form: 51/2

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