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Add 42/60 and 18/42

42/60 + 18/42 is 79/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 42 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    42/60 = 42 × 7/60 × 7 = 294/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    18/42 = 18 × 10/42 × 10 = 180/420
  4. Add the two like fractions:
    294/420 + 180/420 = 294 + 180/420 = 474/420
  5. 474/420 simplified gives 79/70
  6. So, 42/60 + 18/42 = 79/70
    In mixed form: 19/70

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