September 2018 2 21 Report
Rozwiąż układ równań:
{2x + y = -2
2(2x - y) = 8 }

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{2x + y = -2
2(2x - y) = 8 }

{2x +y = -2 /*2
4x - 2y= 8}

{4x +2y = -4
4x - 2y= 8}
------------------------ dodajesz x do x, y do y
8x =4 /:8
x = 0.5

{x = 0.5
2x +y = -2}

{x = 0.5
1 + y= -2}
{x = 0.5
y = -3}
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