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Add 5/20 and 90/12

1st number: 5/20, 2nd number: 7 6/12

5/20 + 90/12 is 31/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 12 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 20 × 3 = 60,
    5/20 = 5 × 3/20 × 3 = 15/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    90/12 = 90 × 5/12 × 5 = 450/60
  4. Add the two like fractions:
    15/60 + 450/60 = 15 + 450/60 = 465/60
  5. 465/60 simplified gives 31/4
  6. So, 5/20 + 90/12 = 31/4
    In mixed form: 73/4

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