Rozwiąż uklad równań :
4x - y = 7
2x- y = 5
{4x-y=7
{2x-y=5 /*(-2)
+ {-4x+2y=-10
y=3
{y=3
{2x-3=5
{2x=8
{x=4
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{4x-y=7
{2x-y=5 /*(-2)
{4x-y=7
+ {-4x+2y=-10
y=3
{y=3
{2x-3=5
{y=3
{2x=8
{y=3
{x=4