$$2(x-y)+(2x-2y)=5+2$$
$x = \frac{7}{4} = 1\frac{3}{4} = 1.75$
$$2x-2y+2x-2y=5+2$$
$$4x-2y-2y=5+2$$
$$4x-4y=5+2$$
$$4x-4y=7$$
$$4x=7+4y$$
$$4x=4y+7$$
$$\frac{4x}{4}=\frac{4y+7}{4}$$
$$x=\frac{4y+7}{4}$$
$$x=y+\frac{7}{4}$$
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$y = -\frac{7}{4} = -1\frac{3}{4} = -1.75$
$$-4y=7-4x$$
$$\frac{-4y}{-4}=\frac{7-4x}{-4}$$
$$y=\frac{7-4x}{-4}$$
$$y=x-\frac{7}{4}$$
