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Add 18/15 and 20/42

1st number: 1 3/15, 2nd number: 20/42

18/15 + 20/42 is 176/105.

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,
    18/15 = 18 × 14/15 × 14 = 252/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    20/42 = 20 × 5/42 × 5 = 100/210
  4. Add the two like fractions:
    252/210 + 100/210 = 252 + 100/210 = 352/210
  5. 352/210 simplified gives 176/105
  6. So, 18/15 + 20/42 = 176/105
    In mixed form: 171/105

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