Błagam o pomoc ! Daję najlepszą !!! zadania w załączniku
7. -3a+(2a-b-4)-(4a-2b+3)=
=-3a+2a-b-4-4a+2b-3=
=-5+b-7
odp.C
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7. -3a+(2a-b-4)-(4a-2b+3)=
=-3a+2a-b-4-4a+2b-3=
=-5+b-7
odp.C