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Add 18/15 and 90/30

1st number: 1 3/15, 2nd number: 3 0/30

18/15 + 90/30 is 21/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 30 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 15 × 2 = 30,
    18/15 = 18 × 2/15 × 2 = 36/30
  3. Likewise, for the 2nd fraction, since 30 × 1 = 30,
    90/30 = 90 × 1/30 × 1 = 90/30
  4. Add the two like fractions:
    36/30 + 90/30 = 36 + 90/30 = 126/30
  5. 126/30 simplified gives 21/5
  6. So, 18/15 + 90/30 = 21/5
    In mixed form: 41/5

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