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Add 21/54 and 30/35

21/54 + 30/35 is 157/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 35 is 1890

    Next, find the equivalent fraction of both fractional numbers with denominator 1890
  2. For the 1st fraction, since 54 × 35 = 1890,
    21/54 = 21 × 35/54 × 35 = 735/1890
  3. Likewise, for the 2nd fraction, since 35 × 54 = 1890,
    30/35 = 30 × 54/35 × 54 = 1620/1890
  4. Add the two like fractions:
    735/1890 + 1620/1890 = 735 + 1620/1890 = 2355/1890
  5. 2355/1890 simplified gives 157/126
  6. So, 21/54 + 30/35 = 157/126
    In mixed form: 131/126

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