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Add 21/20 and 18/48

1st number: 1 1/20, 2nd number: 18/48

21/20 + 18/48 is 57/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 48 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 20 × 12 = 240,
    21/20 = 21 × 12/20 × 12 = 252/240
  3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
    18/48 = 18 × 5/48 × 5 = 90/240
  4. Add the two like fractions:
    252/240 + 90/240 = 252 + 90/240 = 342/240
  5. 342/240 simplified gives 57/40
  6. So, 21/20 + 18/48 = 57/40
    In mixed form: 117/40

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