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(4/2)*x+5 = (2/4)*x // - (2/4)*x
(4/2)*x-((2/4)*x)+5 = 0
(4/2)*x+(-1/2)*x+5 = 0
3/2*x+5 = 0 // - 5
3/2*x = -5 // : 3/2
x = -5/3/2
x = -10/3
x = -10/3
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