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3-4*x = (-1/2)*x+19/18 // - (-1/2)*x+19/18
3-4*x-((-1/2)*x)-(19/18) = 0
(1/2)*x-4*x-19/18+3 = 0
35/18-7/2*x = 0 // - 35/18
-7/2*x = -35/18 // : -7/2
x = -35/18/(-7/2)
x = 5/9
x = 5/9
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