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(7•2x)-7:7=61-76-3y+7x+2y=0 rezolvarea va rog

Răspuns :

(7•2x)-7:7=61
-76-3y+7x+2y=0


(14x-7):7=61
7x-y=76

14x-7=427
7x-y=76


14x=434 ;
x=62

7*62-y=76

434-y=76
y=434-76
y=358