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Add 20/27 and 42/60

20/27 + 42/60 is 389/270.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 60 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 27 × 20 = 540,
    20/27 = 20 × 20/27 × 20 = 400/540
  3. Likewise, for the 2nd fraction, since 60 × 9 = 540,
    42/60 = 42 × 9/60 × 9 = 378/540
  4. Add the two like fractions:
    400/540 + 378/540 = 400 + 378/540 = 778/540
  5. 778/540 simplified gives 389/270
  6. So, 20/27 + 42/60 = 389/270
    In mixed form: 1119/270

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