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Folosind egalitatile: Xxa=15; Xxb=23; Xxc=37 si m+n+r=96,calculati: Xx(a+b+c)+13xm+13xn+13xp

Răspuns :

xa=15
xb=23
xc=37 adunam toate relatiile si obtinem xa+xb+xc=75 rezulta x(a+b+c)=75
relatia ta va fi 
x(a+b+c)+13(m+n +p)=75+13*96=1323