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Add 18/9 and 21/8

1st number: 2 0/9, 2nd number: 2 5/8

18/9 + 21/8 is 37/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 8 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 9 × 8 = 72,
    18/9 = 18 × 8/9 × 8 = 144/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    21/8 = 21 × 9/8 × 9 = 189/72
  4. Add the two like fractions:
    144/72 + 189/72 = 144 + 189/72 = 333/72
  5. 333/72 simplified gives 37/8
  6. So, 18/9 + 21/8 = 37/8
    In mixed form: 45/8

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