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x in (-oo:+oo)
(3/7)*x-(7/3) = (5*x-3)/2 // - (5*x-3)/2
(3/7)*x-((5*x-3)/2)-(7/3) = 0
(3/7)*x-((5*x-3)/2)-7/3 = 0
(-1*(5*x-3))/2+(3*x)/7-7/3 = 0
(-1*3*7*(5*x-3))/(2*3*7)+(2*3*3*x)/(2*3*7)+(-7*2*7)/(2*3*7) = 0
2*3*3*x-1*3*7*(5*x-3)-7*2*7 = 0
63-87*x-98 = 0
-87*x-35 = 0
(-87*x-35)/(2*3*7) = 0
(-87*x-35)/(2*3*7) = 0 // * 2*3*7
-87*x-35 = 0
-87*x-35 = 0 // + 35
-87*x = 35 // : -87
x = 35/(-87)
x = -35/87
x = -35/87
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