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Add 30/35 and 30/90

30/35 + 30/90 is 25/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 90 is 630
  2. For the 1st fraction, since 35 × 18 = 630,
    30/35 = 30 × 18/35 × 18 = 540/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    30/90 = 30 × 7/90 × 7 = 210/630
  4. Add the two fractions:
    540/630 + 210/630 = 540 + 210/630 = 750/630
  5. 750/630 simplified gives 25/21
  6. So, 30/35 + 30/90 = 25/21
    In mixed form: 14/21

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