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Add 4/42 and 21/30

4/42 + 21/30 is 167/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 30 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    4/42 = 4 × 5/42 × 5 = 20/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    21/30 = 21 × 7/30 × 7 = 147/210
  4. Add the two fractions:
    20/210 + 147/210 = 20 + 147/210 = 167/210

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