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3 = x/4-((16-(3*x))/8) // - x/4-((16-(3*x))/8)
(16-(3*x))/8-(x/4)+3 = 0
(16-3*x)/8-(x/4)+3 = 0
(16-3*x)/8-x/4+3 = 0
(4*(16-3*x))/(4*8)+(8*(-x))/(4*8)+(3*4*8)/(4*8) = 0
4*(16-3*x)+8*(-x)+3*4*8 = 0
64-20*x+96 = 0
160-20*x = 0
(160-20*x)/(4*8) = 0
(160-20*x)/(4*8) = 0 // * 4*8
160-20*x = 0
160-20*x = 0 // - 160
-20*x = -160 // : -20
x = -160/(-20)
x = 8
x = 8
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