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Add 1/21 and 4/30

1/21 + 4/30 is 19/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210
  2. For the 1st fraction, since 21 × 10 = 210,
    1/21 = 1 × 10/21 × 10 = 10/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    4/30 = 4 × 7/30 × 7 = 28/210
  4. Add the two fractions:
    10/210 + 28/210 = 10 + 28/210 = 38/210
  5. 38/210 simplified gives 19/105
  6. So, 1/21 + 4/30 = 19/105

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