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Add 10/15 and 7/42

10/15 + 7/42 is 5/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 15 × 14 = 210,
    10/15 = 10 × 14/15 × 14 = 140/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    7/42 = 7 × 5/42 × 5 = 35/210
  4. Add the two like fractions:
    140/210 + 35/210 = 140 + 35/210 = 175/210
  5. 175/210 simplified gives 5/6
  6. So, 10/15 + 7/42 = 5/6

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