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x in (-oo:+oo)
30/38 = (x+36)/36 // - (x+36)/36
30/38-((x+36)/36) = 0
(-1*(x+36))/36+15/19 = 0
(-1*19*(x+36))/(19*36)+(15*36)/(19*36) = 0
15*36-1*19*(x+36) = 0
-19*x-144 = 0
(-19*x-144)/(19*36) = 0
(-19*x-144)/(19*36) = 0 // * 19*36
-19*x-144 = 0
-19*x-144 = 0 // + 144
-19*x = 144 // : -19
x = 144/(-19)
x = -144/19
x = -144/19
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