Subtract 4/42 from 42/2
1st number: 21 0/2, 2nd number: 4/42
42/2 - 4/42 is 439/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
42/2 = 42 × 21/2 × 21 = 882/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
4/42 = 4 × 1/42 × 1 = 4/42 - Subtract the two like fractions:
882/42 - 4/42 = 882 - 4/42 = 878/42 - After reducing the fraction, the answer is 439/21
- In mixed form: 2019/21
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