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Add 90/10 and 15/20

1st number: 9 0/10, 2nd number: 15/20

90/10 + 15/20 is 39/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 20 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    90/10 = 90 × 2/10 × 2 = 180/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    15/20 = 15 × 1/20 × 1 = 15/20
  4. Add the two like fractions:
    180/20 + 15/20 = 180 + 15/20 = 195/20
  5. 195/20 simplified gives 39/4
  6. So, 90/10 + 15/20 = 39/4
    In mixed form: 93/4

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