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Add 20/48 and 21/90

20/48 + 21/90 is 13/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 48 and 90 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 48 × 15 = 720,
    20/48 = 20 × 15/48 × 15 = 300/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    21/90 = 21 × 8/90 × 8 = 168/720
  4. Add the two like fractions:
    300/720 + 168/720 = 300 + 168/720 = 468/720
  5. 468/720 simplified gives 13/20
  6. So, 20/48 + 21/90 = 13/20

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