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X-(2*x)+6/5+5/2 = 0
X-2*x+6/5+5/2 = 0
X-2*x+37/10 = 0 // - X+37/10
-2*x = -(X+37/10) // : -2
x = (-(X+37/10))/(-2)
x = (X+37/10)/2
x = (X+37/10)/2
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