To multiply the signed numbers \(-\frac{2}{5}\) and \(\frac{3}{10}\), we follow the rules for multiplying fractions:
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Multiply the numerators: \[ -2 \times 3 = -6 \]
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Multiply the denominators: \[ 5 \times 10 = 50 \]
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Combine the results: \[ -\frac{6}{50} \]
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Simplify the fraction: Both the numerator and denominator can be divided by 2: \[ -\frac{6 \div 2}{50 \div 2} = -\frac{3}{25} \]
So, the answer in simplest form is: \[ -\frac{3}{25} \]
Thus, the correct response is: −3/25 (or negative Start Fraction 3 over 25 End Fraction).