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Add 30/4 and 81/90

1st number: 7 2/4, 2nd number: 81/90

30/4 + 81/90 is 42/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 4 × 45 = 180,
    30/4 = 30 × 45/4 × 45 = 1350/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    81/90 = 81 × 2/90 × 2 = 162/180
  4. Add the two like fractions:
    1350/180 + 162/180 = 1350 + 162/180 = 1512/180
  5. 1512/180 simplified gives 42/5
  6. So, 30/4 + 81/90 = 42/5
    In mixed form: 82/5

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