Question

$solve \: \frac{0.3 + 0.7x}{x} = 0.85$
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Answer 1

$\frac{0.3 + 0.7x}{x} = 0.85 \\ \\ 0.3 = 0.85x - 0.7 x\\ \\ 0.3 =0.15x \\ \\ x = \frac{0.3}{0.15} \\ \\ x = 2$

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