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5*(2-((1/2)*x)) = 1-((1/4)*x)+4 // - 1-((1/4)*x)+4
5*(2-((1/2)*x))+(1/4)*x-4-1 = 0
5*((-1/2)*x+2)+(1/4)*x-4-1 = 0
5*(2-1/2*x)+x/4-4-1 = 0
(4*5*(2-1/2*x))/4+x/4+(-4*4)/4+(-1*4)/4 = 0
4*5*(2-1/2*x)+x-4*4-1*4 = 0
40-9*x-16-4 = 0
24-9*x-4 = 0
20-9*x = 0
(20-9*x)/4 = 0
(20-9*x)/4 = 0 // * 4
20-9*x = 0
20-9*x = 0 // - 20
-9*x = -20 // : -9
x = -20/(-9)
x = 20/9
x = 20/9
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