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x in (-oo:+oo)
0.67 = (x-200)/25 // - (x-200)/25
0.67-((x-200)/25) = 0
(-1*(x-200))/25+0.67 = 0
(-1*(x-200))/25+(0.67*25)/25 = 0
0.67*25-1*(x-200) = 0
216.75-x = 0
(216.75-x)/25 = 0
(216.75-x)/25 = 0 // * 25
216.75-x = 0
216.75-x = 0 // - 216.75
-x = -216.75 // * -1
x = 216.75
x = 216.75
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