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Add 70/18 and 18/20

1st number: 3 16/18, 2nd number: 18/20

70/18 + 18/20 is 431/90.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    70/18 = 70 × 10/18 × 10 = 700/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    18/20 = 18 × 9/20 × 9 = 162/180
  4. Add the two like fractions:
    700/180 + 162/180 = 700 + 162/180 = 862/180
  5. 862/180 simplified gives 431/90
  6. So, 70/18 + 18/20 = 431/90
    In mixed form: 471/90

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