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5/2-((4/3)*x)-1 = 8 // - 8
5/2-((4/3)*x)-8-1 = 0
(-4/3)*x+5/2-8-1 = 0
-4/3*x-13/2 = 0 // + 13/2
-4/3*x = 13/2 // : -4/3
x = 13/2/(-4/3)
x = -39/8
x = -39/8
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