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x in (-oo:+oo)
(1/4)*(x+4) = 9 // - 9
(1/4)*(x+4)-9 = 0
1/4*(x+4)-9 = 0
1/4*(x+4)-9 = 0
1/4*x-8 = 0
1/4*x-8 = 0
1/4*x-8 = 0 // + 8
1/4*x = 8 // : 1/4
x = 8/1/4
x = 32
x = 32
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