Subtract 42/20 from 9/10
1st number: 9/10, 2nd number: 2 2/20
9/10 - 42/20 is -6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
9/10 = 9 × 2/10 × 2 = 18/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Subtract the two like fractions:
18/20 - 42/20 = 18 - 42/20 = -24/20 - After reducing the fraction, the answer is -6/5
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