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Add 4/21 and 25/30

4/21 + 25/30 is 43/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    4/21 = 4 × 10/21 × 10 = 40/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    25/30 = 25 × 7/30 × 7 = 175/210
  4. Add the two like fractions:
    40/210 + 175/210 = 40 + 175/210 = 215/210
  5. 215/210 simplified gives 43/42
  6. So, 4/21 + 25/30 = 43/42
    In mixed form: 11/42

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