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2*(4*x-k) = (1/4)*(4-(2*x)) // - (1/4)*(4-(2*x))
2*(4*x-k)-((1/4)*(4-(2*x))) = 0
2*(4*x-k)+(-1/4)*(4-2*x) = 0
2*(4*x-k)-1/4*(4-2*x) = 0
2*(4*x-k)-1/4*(4-2*x) = 0
17/2*x-2*k-1 = 0
17/2*x-2*k-1 = 0
17/2*x-2*k-1 = 0 // + -2*k-1
17/2*x = -(-2*k-1) // : 17/2
x = (-(-2*k-1))/17/2
x = 2/17*(1-(-2*k))
x = 2/17*(1-(-2*k))
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