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3*x-((2/2)*x)+3 = 3*x-((1/2)*x)+1 // - 3*x-((1/2)*x)+1
3*x-((2/2)*x)-(3*x)+(1/2)*x-1+3 = 0
3*x-x-3*x+(1/2)*x-1+3 = 0
2-1/2*x = 0 // - 2
-1/2*x = -2 // : -1/2
x = -2/(-1/2)
x = 4
x = 4
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