rozwiąż układ równań
x=y-1
2x-y=5
2x-y=5x= y-12(y-1)- y= 5x= y-12y-2-y = 5 /+2x= y-1y= 7x= 7-1y=7x=6y=7
{x=y-1
{2x-y=5
{2(y-1)-y=5
{2y-2-y=5
{2y-y=5+2
{y=7
{x=7-1
{x=6
myślę że pomogłam ;)
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x=y-1
2x-y=5
x= y-1
2(y-1)- y= 5
x= y-1
2y-2-y = 5 /+2
x= y-1
y= 7
x= 7-1
y=7
x=6
y=7
{x=y-1
{2x-y=5
{x=y-1
{2(y-1)-y=5
{x=y-1
{2y-2-y=5
{x=y-1
{2y-y=5+2
{x=y-1
{y=7
{x=7-1
{y=7
{x=6
{y=7
myślę że pomogłam ;)