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Add 10/40 and 30/42

10/40 + 30/42 is 27/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 42 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    10/40 = 10 × 21/40 × 21 = 210/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    30/42 = 30 × 20/42 × 20 = 600/840
  4. Add the two like fractions:
    210/840 + 600/840 = 210 + 600/840 = 810/840
  5. 810/840 simplified gives 27/28
  6. So, 10/40 + 30/42 = 27/28

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