Solve: $7 = 4 x - 9$

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Solution

$7 = 4 x - 9$
$\Rightarrow 4 x = 7 + 9$
$\Rightarrow 4 x = 16$
$\Rightarrow x = 4$

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$\frac{4 x + 7}{9 - 3 x} = \frac{1}{4}$

5 x - (4 x - 7) (3 x - 5) = 6 - 3 (4 x - 9) (x - 1)

4 x - 9 = 2 x + 7

5 (8 x + 3) = 9 (4 x + 7)

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