rozwiąż układ równań metodą podstawiania y=2x-1
4x+y=8
y=2x-1
4x+2x-1=8
6x=8+1
6x=9 |:6
x= 9/6
x=1,5
{y=2x-1
{4x+y=8
6x=9 I:6
x=9/6=3/2=1 i 1/2
y=2*1,5-1
y=3-1
y=2
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y=2x-1
4x+y=8
4x+2x-1=8
6x=8+1
6x=9 |:6
x= 9/6
x=1,5
{y=2x-1
{4x+y=8
y=2x-1
4x+2x-1=8
6x=9 I:6
x=9/6=3/2=1 i 1/2
y=2*1,5-1
y=3-1
y=2