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Add 90/20 and 70/9

1st number: 4 10/20, 2nd number: 7 7/9

90/20 + 70/9 is 221/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 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 9 × 20 = 180,
    70/9 = 70 × 20/9 × 20 = 1400/180
  4. Add the two like fractions:
    810/180 + 1400/180 = 810 + 1400/180 = 2210/180
  5. 2210/180 simplified gives 221/18
  6. So, 90/20 + 70/9 = 221/18
    In mixed form: 125/18

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