Subtract 12/35 from 3/40
3/40 - 12/35 is -15/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
12/35 = 12 × 8/35 × 8 = 96/280 - Subtract the two like fractions:
21/280 - 96/280 = 21 - 96/280 = -75/280 - After reducing the fraction, the answer is -15/56
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