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Add 12/7 and 30/90

1st number: 1 5/7, 2nd number: 30/90

12/7 + 30/90 is 43/21.

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,
    12/7 = 12 × 90/7 × 90 = 1080/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    30/90 = 30 × 7/90 × 7 = 210/630
  4. Add the two fractions:
    1080/630 + 210/630 = 1080 + 210/630 = 1290/630
  5. 1290/630 simplified gives 43/21
  6. So, 12/7 + 30/90 = 43/21
    In mixed form: 21/21

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