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Linear Equation in One Variable

If 15 - x =...

Question

If $\frac{1}{5} - x = - \frac{4}{5}$ , then $x$ is ...............

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Solution

$\frac{1}{5} - x = - \frac{4}{5} \Rightarrow - x = - \frac{4}{5} - \frac{1}{5} \Rightarrow - x = - \frac{5}{5} \Rightarrow - x = - 1 ∴ x = 1$

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x = 5 - 4 \sqrt{6},

\frac{1}{x}

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