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Add 30/21 and 20/48

1st number: 1 9/21, 2nd number: 20/48

30/21 + 20/48 is 155/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 48 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 336
  2. For the 1st fraction, since 21 × 16 = 336,
    30/21 = 30 × 16/21 × 16 = 480/336
  3. Likewise, for the 2nd fraction, since 48 × 7 = 336,
    20/48 = 20 × 7/48 × 7 = 140/336
  4. Add the two like fractions:
    480/336 + 140/336 = 480 + 140/336 = 620/336
  5. 620/336 simplified gives 155/84
  6. So, 30/21 + 20/48 = 155/84
    In mixed form: 171/84

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