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Subtract 21/42 from 70/15

1st number: 4 10/15, 2nd number: 21/42

70/15 - 21/42 is 25/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 15 × 14 = 210,
    70/15 = 70 × 14/15 × 14 = 980/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    21/42 = 21 × 5/42 × 5 = 105/210
  4. Subtract the two like fractions:
    980/210 - 105/210 = 980 - 105/210 = 875/210
  5. After reducing the fraction, the answer is 25/6
  6. In mixed form: 41/6

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