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Add 28/4 and 21/90

1st number: 7 0/4, 2nd number: 21/90

28/4 + 21/90 is 217/30.

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,
    28/4 = 28 × 45/4 × 45 = 1260/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    21/90 = 21 × 2/90 × 2 = 42/180
  4. Add the two like fractions:
    1260/180 + 42/180 = 1260 + 42/180 = 1302/180
  5. 1302/180 simplified gives 217/30
  6. So, 28/4 + 21/90 = 217/30
    In mixed form: 77/30

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