Układy równań.
2x-5y=2
-2x+y=-10
-4y=-8
y=2
2x-5*2=2
2x-10=2
2x=12
x=6
2x-5(-10+2x)=2
2x+50-10x=2
-8x=-48/:(-8)
więc y=-10+2*6
y=-10+12
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2x-5y=2
-2x+y=-10
-4y=-8
y=2
2x-5*2=2
2x-10=2
2x=12
x=6
2x-5(-10+2x)=2
2x+50-10x=2
-8x=-48/:(-8)
x=6
więc y=-10+2*6
y=-10+12
y=2