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Add 18/42 and 10/90

18/42 + 10/90 is 34/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 42 × 15 = 630,
    18/42 = 18 × 15/42 × 15 = 270/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    10/90 = 10 × 7/90 × 7 = 70/630
  4. Add the two like fractions:
    270/630 + 70/630 = 270 + 70/630 = 340/630
  5. 340/630 simplified gives 34/63
  6. So, 18/42 + 10/90 = 34/63

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