Subtract 42/10 from 2/5
1st number: 2/5, 2nd number: 4 2/10
2/5 - 42/10 is -19/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
2/5 = 2 × 2/5 × 2 = 4/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
42/10 = 42 × 1/10 × 1 = 42/10 - Subtract the two like fractions:
4/10 - 42/10 = 4 - 42/10 = -38/10 - After reducing the fraction, the answer is -19/5
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