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Add 20/45 and 2/21

20/45 + 2/21 is 34/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 21 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 21 × 15 = 315,
    2/21 = 2 × 15/21 × 15 = 30/315
  4. Add the two like fractions:
    140/315 + 30/315 = 140 + 30/315 = 170/315
  5. 170/315 simplified gives 34/63
  6. So, 20/45 + 2/21 = 34/63

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