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Add 21/72 and 7/8

21/72 + 7/8 is 7/6.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 72 × 1 = 72,
    21/72 = 21 × 1/72 × 1 = 21/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    7/8 = 7 × 9/8 × 9 = 63/72
  4. Add the two like fractions:
    21/72 + 63/72 = 21 + 63/72 = 84/72
  5. 84/72 simplified gives 7/6
  6. So, 21/72 + 7/8 = 7/6
    In mixed form: 11/6

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