Subtract 30/8 from 42/40
1st number: 1 2/40, 2nd number: 3 6/8
42/40 - 30/8 is -27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
30/8 = 30 × 5/8 × 5 = 150/40 - Subtract the two like fractions:
42/40 - 150/40 = 42 - 150/40 = -108/40 - After reducing the fraction, the answer is -27/10
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