Subtract 42/21 from 35/2
1st number: 17 1/2, 2nd number: 2 0/21
35/2 - 42/21 is 31/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
35/2 = 35 × 21/2 × 21 = 735/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
42/21 = 42 × 2/21 × 2 = 84/42 - Subtract the two like fractions:
735/42 - 84/42 = 735 - 84/42 = 651/42 - After reducing the fraction, the answer is 31/2
- In mixed form: 151/2
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