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(1/2)*x+3*x+(3/8)*y-((2/16)*y)-((5/3)*z)-((2/6)*z) = 0
(1/2)*x+3*x+(3/8)*y+(-1/8)*y+(-5/3)*z+(-1/3)*z = 0
7/2*x+1/4*y-2*z = 0 // - 1/4*y-2*z
7/2*x = -(1/4*y-2*z) // : 7/2
x = (-(1/4*y-2*z))/7/2
x = -2/7*(1/4*y-2*z)
x = -2/7*(1/4*y-2*z)
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