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a in (-oo:+oo)
-(4*a)-8 = -32 // + 32
32-(4*a)-8 = 0
32-4*a-8 = 0
24-4*a = 0 // - 24
-4*a = -24 // : -4
a = -24/(-4)
a = 6
a = 6
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