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2*((-(4*x)-13)/3) = 0
2*((-4*x-13)/3) = 0
(2*(-4*x-13))/3 = 0
-4*x-13 = 0 // + 13
-4*x = 13 // : -4
x = 13/(-4)
x = -13/4
x = -13/4
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