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Add 21/42 and 27/35

21/42 + 27/35 is 89/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 35 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    21/42 = 21 × 5/42 × 5 = 105/210
  3. Likewise, for the 2nd fraction, since 35 × 6 = 210,
    27/35 = 27 × 6/35 × 6 = 162/210
  4. Add the two like fractions:
    105/210 + 162/210 = 105 + 162/210 = 267/210
  5. 267/210 simplified gives 89/70
  6. So, 21/42 + 27/35 = 89/70
    In mixed form: 119/70

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