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x in (-oo:+oo)
(1/2)*x+3+125 = 180 // - 180
(1/2)*x-180+3+125 = 0
1/2*x-52 = 0 // + 52
1/2*x = 52 // : 1/2
x = 52/1/2
x = 104
x = 104
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