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x in (-oo:+oo)
(1*x)/4-2 = 250 // - 250
(1*x)/4-250-2 = 0
x/4-250-2 = 0
1/4*x-252 = 0 // + 252
1/4*x = 252 // : 1/4
x = 252/1/4
x = 1008
x = 1008
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