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Add 2/90 and 5/21

2/90 + 5/21 is 82/315.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 21 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    2/90 = 2 × 7/90 × 7 = 14/630
  3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
    5/21 = 5 × 30/21 × 30 = 150/630
  4. Add the two like fractions:
    14/630 + 150/630 = 14 + 150/630 = 164/630
  5. 164/630 simplified gives 82/315
  6. So, 2/90 + 5/21 = 82/315

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