$$\left. \begin{array} { l } { ( x + 2 y - 6 x + 5 a ) = 2 ( 59 + 50 ) \cdot ( 259 - 8 ) = } \\ { \text { t . h e f o r a r e a r f o r a l y e r e f o r a r p e r e m e r o f e \right.$$
$x=\frac{2y}{5}+a-\frac{54718}{5}$
$$-5x+2y+5a=2\left(59+50\right)\left(259-8\right)$$
$$-5x+2y+5a=2\times 109\left(259-8\right)$$
$$-5x+2y+5a=218\left(259-8\right)$$
$$-5x+2y+5a=218\times 251$$
$$-5x+2y+5a=54718$$
$$-5x+5a=54718-2y$$
$$-5x=54718-2y-5a$$
$$-5x=54718-5a-2y$$
$$\frac{-5x}{-5}=\frac{54718-5a-2y}{-5}$$
$$x=\frac{54718-5a-2y}{-5}$$
$$x=\frac{2y}{5}+a-\frac{54718}{5}$$
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