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Urgent plizz!!Deplin va rg..
6x+56=(7-3x)*5


Răspuns :

[tex]\displaystyle 6x+56=(7-3x) \cdot 5 \\ 6x+56=35-15x \\ 6x+15x=35-56 \\ 21x=-21 \\ x=- \frac{21}{21} \\ x=-1[/tex]