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a) stiind ca x+y+z+11=43,determinati valoarea lui x+y+z


Răspuns :

a. x+y+z=11+43⇒x+y+z=43-11⇒x+y+z=32;
[tex]x+y+z+11=43\\\\x+y+z=43-11\\\\\boxed{x+y+z=32}[/tex]