Subtract 9/20 from 42/2
1st number: 21 0/2, 2nd number: 9/20
42/2 - 9/20 is 411/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
42/2 = 42 × 10/2 × 10 = 420/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
9/20 = 9 × 1/20 × 1 = 9/20 - Subtract the two like fractions:
420/20 - 9/20 = 420 - 9/20 = 411/20 - In mixed form: 2011/20
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