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Add 90/80 and 21/18

1st number: 1 10/80, 2nd number: 1 3/18

90/80 + 21/18 is 55/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 18 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    90/80 = 90 × 9/80 × 9 = 810/720
  3. Likewise, for the 2nd fraction, since 18 × 40 = 720,
    21/18 = 21 × 40/18 × 40 = 840/720
  4. Add the two like fractions:
    810/720 + 840/720 = 810 + 840/720 = 1650/720
  5. 1650/720 simplified gives 55/24
  6. So, 90/80 + 21/18 = 55/24
    In mixed form: 27/24

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