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Add 12/32 and 4/21

12/32 + 4/21 is 95/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 21 is 672

    Next, find the equivalent fraction of both fractional numbers with denominator 672
  2. For the 1st fraction, since 32 × 21 = 672,
    12/32 = 12 × 21/32 × 21 = 252/672
  3. Likewise, for the 2nd fraction, since 21 × 32 = 672,
    4/21 = 4 × 32/21 × 32 = 128/672
  4. Add the two like fractions:
    252/672 + 128/672 = 252 + 128/672 = 380/672
  5. 380/672 simplified gives 95/168
  6. So, 12/32 + 4/21 = 95/168

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