rozwiaż uklad równan \left \{ {{y=2x-1} \atop {4x+y=8}} \right metoda podstawiania.
y=2x-1
4x+y=8
4x+2x-1=8
6x=9
x=9/6=1,5
y=3-1=2
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y=2x-1
4x+y=8
4x+2x-1=8
6x=9
x=9/6=1,5
y=3-1=2