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Add 90/7 and 80/90

1st number: 12 6/7, 2nd number: 80/90

90/7 + 80/90 is 866/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 90 is 630
  2. For the 1st fraction, since 7 × 90 = 630,
    90/7 = 90 × 90/7 × 90 = 8100/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    80/90 = 80 × 7/90 × 7 = 560/630
  4. Add the two fractions:
    8100/630 + 560/630 = 8100 + 560/630 = 8660/630
  5. 8660/630 simplified gives 866/63
  6. So, 90/7 + 80/90 = 866/63
    In mixed form: 1347/63

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