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22-09-2018
Mathematics

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When a number x is multiplied by 4, the result is 2/5. What is t he value of x

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22-09-2018

The equation:

[tex]x\cdot4=\dfrac{2}{5}\ \ \ \ |\text{divide both sides by 4}\\\\x=\dfrac{2}{5}:4\\\\x=\dfrac{2}{5}\cdot\dfrac{1}{4}\\\\x=\dfrac{1}{5}\cdot\dfrac{1}{2}\\\\\boxed{x=\dfrac{1}{10}}[/tex]

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