$$-2x-(\frac{3x-4}{7})=(\frac{4x-27}{3})-3$$
$x = \frac{264}{79} = 3\frac{27}{79} \approx 3.341772152$
$$-42x-3\left(3x-4\right)=7\left(4x-27\right)-63$$
$$-42x-9x+12=7\left(4x-27\right)-63$$
$$-51x+12=7\left(4x-27\right)-63$$
$$-51x+12=28x-189-63$$
$$-51x+12=28x-252$$
$$-51x+12-28x=-252$$
$$-79x+12=-252$$
$$-79x=-252-12$$
$$-79x=-264$$
$$x=\frac{-264}{-79}$$
$$x=\frac{264}{79}$$
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