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Add 30/42 and 7/20

30/42 + 7/20 is 149/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 42 × 10 = 420,
    30/42 = 30 × 10/42 × 10 = 300/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    7/20 = 7 × 21/20 × 21 = 147/420
  4. Add the two like fractions:
    300/420 + 147/420 = 300 + 147/420 = 447/420
  5. 447/420 simplified gives 149/140
  6. So, 30/42 + 7/20 = 149/140
    In mixed form: 19/140

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