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Add 7/18 and 7/8

7/18 + 7/8 is 91/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 8 is 72
  2. For the 1st fraction, since 18 × 4 = 72,
    7/18 = 7 × 4/18 × 4 = 28/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    7/8 = 7 × 9/8 × 9 = 63/72
  4. Add the two fractions:
    28/72 + 63/72 = 28 + 63/72 = 91/72
  5. In mixed form: 119/72

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