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x in (-oo:+oo)
13 = (1300-(2*x))/46 // - (1300-(2*x))/46
13-((1300-(2*x))/46) = 0
13-((1300-2*x)/46) = 0
(-1*(1300-2*x))/46+13 = 0
(-1*(1300-2*x))/46+(13*46)/46 = 0
13*46-1*(1300-2*x) = 0
2*x-702 = 0
(2*x-702)/46 = 0
(2*x-702)/46 = 0 // * 46
2*x-702 = 0
2*x-702 = 0 // + 702
2*x = 702 // : 2
x = 702/2
x = 351
x = 351
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