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Add 20/21 and 18/60

20/21 + 18/60 is 263/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 60 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    20/21 = 20 × 20/21 × 20 = 400/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    18/60 = 18 × 7/60 × 7 = 126/420
  4. Add the two like fractions:
    400/420 + 126/420 = 400 + 126/420 = 526/420
  5. 526/420 simplified gives 263/210
  6. So, 20/21 + 18/60 = 263/210
    In mixed form: 153/210

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