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Add 45/72 and 21/7

1st number: 45/72, 2nd number: 3 0/7

45/72 + 21/7 is 29/8.

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,
    45/72 = 45 × 7/72 × 7 = 315/504
  3. Likewise, for the 2nd fraction, since 7 × 72 = 504,
    21/7 = 21 × 72/7 × 72 = 1512/504
  4. Add the two like fractions:
    315/504 + 1512/504 = 315 + 1512/504 = 1827/504
  5. 1827/504 simplified gives 29/8
  6. So, 45/72 + 21/7 = 29/8
    In mixed form: 35/8

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