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Add 90/8 and 21/12

1st number: 11 2/8, 2nd number: 1 9/12

90/8 + 21/12 is 13/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 12 is 24

    Next, find the equivalent fraction of both fractional numbers with denominator 24
  2. For the 1st fraction, since 8 × 3 = 24,
    90/8 = 90 × 3/8 × 3 = 270/24
  3. Likewise, for the 2nd fraction, since 12 × 2 = 24,
    21/12 = 21 × 2/12 × 2 = 42/24
  4. Add the two like fractions:
    270/24 + 42/24 = 270 + 42/24 = 312/24
  5. 312/24 simplified gives 13/1
  6. So, 90/8 + 21/12 = 13/1

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