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Add 30/18 and 90/7

1st number: 1 12/18, 2nd number: 12 6/7

30/18 + 90/7 is 305/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    30/18 = 30 × 7/18 × 7 = 210/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    90/7 = 90 × 18/7 × 18 = 1620/126
  4. Add the two like fractions:
    210/126 + 1620/126 = 210 + 1620/126 = 1830/126
  5. 1830/126 simplified gives 305/21
  6. So, 30/18 + 90/7 = 305/21
    In mixed form: 1411/21

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