$$\frac{2y}{5}+\frac{3}{4}+5=\frac{1}{20}-\frac{2y}{2}$$
$y = -\frac{57}{14} = -4\frac{1}{14} \approx -4.071428571$
$$4\times 2y+15+100=1-10\times 2y$$
$$8y+15+100=1-10\times 2y$$
$$8y+115=1-10\times 2y$$
$$8y+115=1-20y$$
$$8y+115+20y=1$$
$$28y+115=1$$
$$28y=1-115$$
$$28y=-114$$
$$y=\frac{-114}{28}$$
$$y=-\frac{57}{14}$$
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