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Add 90/12 and 80/7

1st number: 7 6/12, 2nd number: 11 3/7

90/12 + 80/7 is 265/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    90/12 = 90 × 7/12 × 7 = 630/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    80/7 = 80 × 12/7 × 12 = 960/84
  4. Add the two like fractions:
    630/84 + 960/84 = 630 + 960/84 = 1590/84
  5. 1590/84 simplified gives 265/14
  6. So, 90/12 + 80/7 = 265/14
    In mixed form: 1813/14

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