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Add 8/21 and 28/45

8/21 + 28/45 is 316/315.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 21 × 15 = 315,
    8/21 = 8 × 15/21 × 15 = 120/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    28/45 = 28 × 7/45 × 7 = 196/315
  4. Add the two like fractions:
    120/315 + 196/315 = 120 + 196/315 = 316/315
  5. So, 8/21 + 28/45 = 316/315
    In mixed form: 11/315

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