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Add 20/42 and 7/30

20/42 + 7/30 is 149/210.

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,
    20/42 = 20 × 5/42 × 5 = 100/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    7/30 = 7 × 7/30 × 7 = 49/210
  4. Add the two fractions:
    100/210 + 49/210 = 100 + 49/210 = 149/210

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