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Add 18/15 and 20/72

1st number: 1 3/15, 2nd number: 20/72

18/15 + 20/72 is 133/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 15 × 24 = 360,
    18/15 = 18 × 24/15 × 24 = 432/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  4. Add the two like fractions:
    432/360 + 100/360 = 432 + 100/360 = 532/360
  5. 532/360 simplified gives 133/90
  6. So, 18/15 + 20/72 = 133/90
    In mixed form: 143/90

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