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x in (-oo:+oo)
(1/8)*(x+230) = 200 // - 200
(1/8)*(x+230)-200 = 0
1/8*(x+230)-200 = 0
1/8*(x+230)-200 = 0
1/8*x-685/4 = 0
1/8*x-685/4 = 0
1/8*x-685/4 = 0 // + 685/4
1/8*x = 685/4 // : 1/8
x = 685/4/1/8
x = 1370
x = 1370
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