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Add 90/20 and 80/18

1st number: 4 10/20, 2nd number: 4 8/18

90/20 + 80/18 is 161/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    90/20 = 90 × 9/20 × 9 = 810/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    80/18 = 80 × 10/18 × 10 = 800/180
  4. Add the two like fractions:
    810/180 + 800/180 = 810 + 800/180 = 1610/180
  5. 1610/180 simplified gives 161/18
  6. So, 90/20 + 80/18 = 161/18
    In mixed form: 817/18

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