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Add 18/90 and 21/7

1st number: 18/90, 2nd number: 3 0/7

18/90 + 21/7 is 16/5.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    18/90 = 18 × 7/90 × 7 = 126/630
  3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
    21/7 = 21 × 90/7 × 90 = 1890/630
  4. Add the two like fractions:
    126/630 + 1890/630 = 126 + 1890/630 = 2016/630
  5. 2016/630 simplified gives 16/5
  6. So, 18/90 + 21/7 = 16/5
    In mixed form: 31/5

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