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x in (-oo:+oo)
(-1/4)*(2*x-4) = 48 // - 48
(-1/4)*(2*x-4)-48 = 0
-1/4*(2*x-4)-48 = 0
-1/4*(2*x-4)-48 = 0
-1/2*x-47 = 0
-1/2*x-47 = 0
-1/2*x-47 = 0 // + 47
-1/2*x = 47 // : -1/2
x = 47/(-1/2)
x = -94
x = -94
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