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q in (-oo:+oo)
18 = (1200-(2*q))/49 // - (1200-(2*q))/49
18-((1200-(2*q))/49) = 0
18-((1200-2*q)/49) = 0
(-1*(1200-2*q))/49+18 = 0
(-1*(1200-2*q))/49+(18*49)/49 = 0
18*49-1*(1200-2*q) = 0
2*q-318 = 0
(2*q-318)/49 = 0
(2*q-318)/49 = 0 // * 49
2*q-318 = 0
2*q-318 = 0 // + 318
2*q = 318 // : 2
q = 318/2
q = 159
q = 159
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