Solve:
$0.16 (5 x - 2) = 0.4 x + 7$

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Solution

$0.16 (5 x - 2) = 0.4 x + 7$

$\Rightarrow 0.8 x - 0.32 = 0.4 x + 7$

$\Rightarrow 0.4 x = 7.32$

$\Rightarrow x = 18.3$ .

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