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(1/3)*x-(4*x)+2 = 40/9 // - 40/9
(1/3)*x-(4*x)-(40/9)+2 = 0
(1/3)*x-4*x-40/9+2 = 0
-11/3*x-22/9 = 0 // + 22/9
-11/3*x = 22/9 // : -11/3
x = 22/9/(-11/3)
x = -2/3
x = -2/3
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