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-((4/3)*x)-1/2 = 2/5 // - 2/5
-((4/3)*x)-1/2-(2/5) = 0
(-4/3)*x-1/2-2/5 = 0
-4/3*x-9/10 = 0 // + 9/10
-4/3*x = 9/10 // : -4/3
x = 9/10/(-4/3)
x = -27/40
x = -27/40
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