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Add 21/36 and 7/8

21/36 + 7/8 is 35/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 8 is 72
  2. For the 1st fraction, since 36 × 2 = 72,
    21/36 = 21 × 2/36 × 2 = 42/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    7/8 = 7 × 9/8 × 9 = 63/72
  4. Add the two fractions:
    42/72 + 63/72 = 42 + 63/72 = 105/72
  5. After reducing the fraction, the answer is 35/24
  6. In mixed form: 111/24

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