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x in (-oo:+oo)
x-(4/3)+3 = (5*x)/8 // - (5*x)/8
x-((5*x)/8)-(4/3)+3 = 0
x+(-5/8)*x-4/3+3 = 0
3/8*x+5/3 = 0 // - 5/3
3/8*x = -5/3 // : 3/8
x = -5/3/3/8
x = -40/9
x = -40/9
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