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Add 20/45 and 9/7

1st number: 20/45, 2nd number: 1 2/7

20/45 + 9/7 is 109/63.

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,
    20/45 = 20 × 7/45 × 7 = 140/315
  3. Likewise, for the 2nd fraction, since 7 × 45 = 315,
    9/7 = 9 × 45/7 × 45 = 405/315
  4. Add the two like fractions:
    140/315 + 405/315 = 140 + 405/315 = 545/315
  5. 545/315 simplified gives 109/63
  6. So, 20/45 + 9/7 = 109/63
    In mixed form: 146/63

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