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x in (-oo:+oo)
(1/8)*(x+150) = 125 // - 125
(1/8)*(x+150)-125 = 0
1/8*(x+150)-125 = 0
1/8*(x+150)-125 = 0
1/8*x-425/4 = 0
1/8*x-425/4 = 0
1/8*x-425/4 = 0 // + 425/4
1/8*x = 425/4 // : 1/8
x = 425/4/1/8
x = 850
x = 850
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