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Add 20/90 and 16/21

20/90 + 16/21 is 62/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 21 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    20/90 = 20 × 7/90 × 7 = 140/630
  3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
    16/21 = 16 × 30/21 × 30 = 480/630
  4. Add the two like fractions:
    140/630 + 480/630 = 140 + 480/630 = 620/630
  5. 620/630 simplified gives 62/63
  6. So, 20/90 + 16/21 = 62/63

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