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Add 15/45 and 1/7

15/45 + 1/7 is 10/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 7 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 45 × 7 = 315,
    15/45 = 15 × 7/45 × 7 = 105/315
  3. Likewise, for the 2nd fraction, since 7 × 45 = 315,
    1/7 = 1 × 45/7 × 45 = 45/315
  4. Add the two like fractions:
    105/315 + 45/315 = 105 + 45/315 = 150/315
  5. 150/315 simplified gives 10/21
  6. So, 15/45 + 1/7 = 10/21

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