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Add 40/15 and 21/42

1st number: 2 10/15, 2nd number: 21/42

40/15 + 21/42 is 19/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210
  2. For the 1st fraction, since 15 × 14 = 210,
    40/15 = 40 × 14/15 × 14 = 560/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    21/42 = 21 × 5/42 × 5 = 105/210
  4. Add the two fractions:
    560/210 + 105/210 = 560 + 105/210 = 665/210
  5. 665/210 simplified gives 19/6
  6. So, 40/15 + 21/42 = 19/6
    In mixed form: 31/6

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