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Add 21/28 and 4/18

21/28 + 4/18 is 35/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 18 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 28 × 9 = 252,
    21/28 = 21 × 9/28 × 9 = 189/252
  3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
    4/18 = 4 × 14/18 × 14 = 56/252
  4. Add the two like fractions:
    189/252 + 56/252 = 189 + 56/252 = 245/252
  5. 245/252 simplified gives 35/36
  6. So, 21/28 + 4/18 = 35/36

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