rozwiąż równanie 2x+y=14 5x+4y=17
2x+y=14
5x+4y=17
y=14-2x
5x+4(14-2x)=17
5x+56-8x=17
5x-8x=17-56
-3x=-39/: (-3)
x=13
y=14-2*13
y=-12
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2x+y=14
5x+4y=17
y=14-2x
5x+4(14-2x)=17
y=14-2x
5x+56-8x=17
y=14-2x
5x-8x=17-56
y=14-2x
-3x=-39/: (-3)
y=14-2x
x=13
y=14-2*13
x=13
y=-12
x=13