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Add 21/7 and 3/90

1st number: 3 0/7, 2nd number: 3/90

21/7 + 3/90 is 91/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 7 × 90 = 630,
    21/7 = 21 × 90/7 × 90 = 1890/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    3/90 = 3 × 7/90 × 7 = 21/630
  4. Add the two like fractions:
    1890/630 + 21/630 = 1890 + 21/630 = 1911/630
  5. 1911/630 simplified gives 91/30
  6. So, 21/7 + 3/90 = 91/30
    In mixed form: 31/30

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