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Add 21/90 and 30/20

1st number: 21/90, 2nd number: 1 10/20

21/90 + 30/20 is 26/15.

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,
    21/90 = 21 × 2/90 × 2 = 42/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    30/20 = 30 × 9/20 × 9 = 270/180
  4. Add the two like fractions:
    42/180 + 270/180 = 42 + 270/180 = 312/180
  5. 312/180 simplified gives 26/15
  6. So, 21/90 + 30/20 = 26/15
    In mixed form: 111/15

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