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Add 9/72 and 21/7

1st number: 9/72, 2nd number: 3 0/7

9/72 + 21/7 is 25/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 7 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    9/72 = 9 × 7/72 × 7 = 63/504
  3. Likewise, for the 2nd fraction, since 7 × 72 = 504,
    21/7 = 21 × 72/7 × 72 = 1512/504
  4. Add the two like fractions:
    63/504 + 1512/504 = 63 + 1512/504 = 1575/504
  5. 1575/504 simplified gives 25/8
  6. So, 9/72 + 21/7 = 25/8
    In mixed form: 31/8

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