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Subtract 21/30 from 16/35

16/35 - 21/30 is -17/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 35 × 6 = 210,
    16/35 = 16 × 6/35 × 6 = 96/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    21/30 = 21 × 7/30 × 7 = 147/210
  4. Subtract the two like fractions:
    96/210 - 147/210 = 96 - 147/210 = -51/210
  5. After reducing the fraction, the answer is -17/70

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