To multiply \(-\frac{2}{5}\) by \(\frac{3}{10}\), you can follow these steps:
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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: To simplify \(-\frac{6}{50}\), we divide the numerator and the denominator by their greatest common divisor, which is \(2\): \[ -\frac{6 \div 2}{50 \div 2} = -\frac{3}{25} \]
Thus, the answer in simplest form is \(-\frac{3}{25}\).
From the options provided, the correct answer is: -3/25.