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x in (-oo:+oo)
3*x+8/2+3 = (4*x)/5 // - (4*x)/5
3*x-((4*x)/5)+8/2+3 = 0
3*x+(-4/5)*x+8/2+3 = 0
11/5*x+7 = 0 // - 7
11/5*x = -7 // : 11/5
x = -7/11/5
x = -35/11
x = -35/11
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