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Add 3/7 and 7/90

3/7 + 7/90 is 319/630.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 90 is 630
  2. For the 1st fraction, since 7 × 90 = 630,
    3/7 = 3 × 90/7 × 90 = 270/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    7/90 = 7 × 7/90 × 7 = 49/630
  4. Add the two fractions:
    270/630 + 49/630 = 270 + 49/630 = 319/630
  5. So, 3/7 + 7/90 = 319/630

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