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7*x-((1/7)*(2*x-(x/2)-(1/2)))-(1/4) = 4 // - 4
7*x-((1/7)*(2*x-(x/2)-(1/2)))-(1/4)-4 = 0
(-1/7)*(2*x-(x/2)-1/2)+7*x-1/4-4 = 0
7*x-1/7*(3/2*x-1/2)-1/4-4 = 0
(-1/7*4*(3/2*x-1/2))/4+(4*7*x)/4-1/4+(-4*4)/4 = 0
4*7*x-1/7*4*(3/2*x-1/2)-4*4-1 = 0
190/7*x-16-1+2/7 = 0
190/7*x-16-5/7 = 0
190/7*x-117/7 = 0
(190/7*x-117/7)/4 = 0
(190/7*x-117/7)/4 = 0 // * 4
190/7*x-117/7 = 0
190/7*x-117/7 = 0 // + 117/7
190/7*x = 117/7 // : 190/7
x = 117/7/190/7
x = 117/190
x = 117/190
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