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Add 90/15 and 21/4

1st number: 6 0/15, 2nd number: 5 1/4

90/15 + 21/4 is 45/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 4 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 15 × 4 = 60,
    90/15 = 90 × 4/15 × 4 = 360/60
  3. Likewise, for the 2nd fraction, since 4 × 15 = 60,
    21/4 = 21 × 15/4 × 15 = 315/60
  4. Add the two like fractions:
    360/60 + 315/60 = 360 + 315/60 = 675/60
  5. 675/60 simplified gives 45/4
  6. So, 90/15 + 21/4 = 45/4
    In mixed form: 111/4

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