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