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Add 21/90 and 30/7

1st number: 21/90, 2nd number: 4 2/7

21/90 + 30/7 is 949/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 7 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    21/90 = 21 × 7/90 × 7 = 147/630
  3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
    30/7 = 30 × 90/7 × 90 = 2700/630
  4. Add the two fractions:
    147/630 + 2700/630 = 147 + 2700/630 = 2847/630
  5. After reducing the fraction, the answer is 949/210
  6. In mixed form: 4109/210

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