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Rezolvati in multimea numerelor reale prin metoda reducerii sistemului de ecuatii:
6x-8y=-2, 5x+2y=1,8;


Răspuns :

{6x-8y=-2
{5x+2y=1.8|*4
 
{6x-8y=-2
{20x+8y=7.2

{6x-8y=-2
{26x+8y=7.2

{26x=5.2
{20x+8y=7.2

{x=5.2/26
{20x+8y=7.2

{x=0.2
{20.0.2+8y=7.2

{x=0.2
{4+8y=7.2

x=0.2
{8y=7.2-4

{x=0.2
{8x=3.2

{x=0.2
{y=3.2/8

{x=0.2
{y=0.4