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-5x-4x=-4-4a
9x=4+4a /:9
x=(4+4a)/9
4a+4<0
4a<-4
a<-1
Odp. D
4-5x=4x-4a
-9x=-4a-4
9x=4a+4
<=> 4a+4<0 <=> a+1<0 <=> a < -1 D
Jeśli coś jest niejasne to pisz ;)