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Add 8/20 and 21/18

1st number: 8/20, 2nd number: 1 3/18

8/20 + 21/18 is 47/30.

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,
    8/20 = 8 × 9/20 × 9 = 72/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    21/18 = 21 × 10/18 × 10 = 210/180
  4. Add the two like fractions:
    72/180 + 210/180 = 72 + 210/180 = 282/180
  5. 282/180 simplified gives 47/30
  6. So, 8/20 + 21/18 = 47/30
    In mixed form: 117/30

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