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Add 30/21 and 18/90

1st number: 1 9/21, 2nd number: 18/90

30/21 + 18/90 is 57/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630
  2. For the 1st fraction, since 21 × 30 = 630,
    30/21 = 30 × 30/21 × 30 = 900/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    18/90 = 18 × 7/90 × 7 = 126/630
  4. Add the two fractions:
    900/630 + 126/630 = 900 + 126/630 = 1026/630
  5. 1026/630 simplified gives 57/35
  6. So, 30/21 + 18/90 = 57/35
    In mixed form: 122/35

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