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3x(2x-1)+3x(x+1)-2x(x-5)=15(8-x)​

Răspuns :

Răspuns:

6x2-1+3x2+1-2x2-5=120x ,18x4+2-2x2-5=120x,36x6-3=120x,120x/36-3,simplificat ne da..20/6-3,60/6=10