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Add 72/9 and 98/20

1st number: 8 0/9, 2nd number: 4 18/20

72/9 + 98/20 is 129/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    72/9 = 72 × 20/9 × 20 = 1440/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    98/20 = 98 × 9/20 × 9 = 882/180
  4. Add the two like fractions:
    1440/180 + 882/180 = 1440 + 882/180 = 2322/180
  5. 2322/180 simplified gives 129/10
  6. So, 72/9 + 98/20 = 129/10
    In mixed form: 129/10

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