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a) Daca x+3y = 576 , aflati x + 179+ 3y
b) Daca 2a+ 3b = 156 , aflati 129 + 6b + 4a


Răspuns :

A) Daca x+3y = 576 , aflati x + 179+ 3y
x+179+3y=x+3y+17=576+179=755

b) Daca 2a+ 3b = 156 , aflati 129 + 6b + 4a
2a+3b=156  inmultim cu 2
4a+6b=312
129+6b+4a=129+312=441