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Add 42/90 and 6/20

42/90 + 6/20 is 23/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    42/90 = 42 × 2/90 × 2 = 84/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    6/20 = 6 × 9/20 × 9 = 54/180
  4. Add the two like fractions:
    84/180 + 54/180 = 84 + 54/180 = 138/180
  5. 138/180 simplified gives 23/30
  6. So, 42/90 + 6/20 = 23/30

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