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Add 45/12 and 90/28

1st number: 3 9/12, 2nd number: 3 6/28

45/12 + 90/28 is 195/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    45/12 = 45 × 7/12 × 7 = 315/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    90/28 = 90 × 3/28 × 3 = 270/84
  4. Add the two like fractions:
    315/84 + 270/84 = 315 + 270/84 = 585/84
  5. 585/84 simplified gives 195/28
  6. So, 45/12 + 90/28 = 195/28
    In mixed form: 627/28

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