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q in (-oo:+oo)
14 = (1900-(2*q))/45 // - (1900-(2*q))/45
14-((1900-(2*q))/45) = 0
14-((1900-2*q)/45) = 0
(-1*(1900-2*q))/45+14 = 0
(-1*(1900-2*q))/45+(14*45)/45 = 0
14*45-1*(1900-2*q) = 0
2*q-1270 = 0
(2*q-1270)/45 = 0
(2*q-1270)/45 = 0 // * 45
2*q-1270 = 0
2*q-1270 = 0 // + 1270
2*q = 1270 // : 2
q = 1270/2
q = 635
q = 635
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