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Add 15/42 and 2/10

15/42 + 2/10 is 39/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    15/42 = 15 × 5/42 × 5 = 75/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    2/10 = 2 × 21/10 × 21 = 42/210
  4. Add the two like fractions:
    75/210 + 42/210 = 75 + 42/210 = 117/210
  5. 117/210 simplified gives 39/70
  6. So, 15/42 + 2/10 = 39/70

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