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Add 7/90 and 8/20

7/90 + 8/20 is 43/90.

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,
    7/90 = 7 × 2/90 × 2 = 14/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    8/20 = 8 × 9/20 × 9 = 72/180
  4. Add the two like fractions:
    14/180 + 72/180 = 14 + 72/180 = 86/180
  5. 86/180 simplified gives 43/90
  6. So, 7/90 + 8/20 = 43/90

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