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x in (-oo:+oo)
(1/2)*(x-4) = 6 // - 6
(1/2)*(x-4)-6 = 0
1/2*(x-4)-6 = 0
1/2*(x-4)-6 = 0
1/2*x-8 = 0
1/2*x-8 = 0
1/2*x-8 = 0 // + 8
1/2*x = 8 // : 1/2
x = 8/1/2
x = 16
x = 16
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