Metoda podstawiania.x+4y= -23x-8y=10x = -2 - 4y3(-2 - 4y) - 8y = 10x = -2 - 4y-6 - 12y - 8y = 10x = -2 - 4y-20y = 16 /:(-20)x = -2 - 4yy = -0,8x = -2 - 4*(-0,8)y = -0,8x = 1,2y = -0,8
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Metoda podstawiania.
x+4y= -2
3x-8y=10
x = -2 - 4y
3(-2 - 4y) - 8y = 10
x = -2 - 4y
-6 - 12y - 8y = 10
x = -2 - 4y
-20y = 16 /:(-20)
x = -2 - 4y
y = -0,8
x = -2 - 4*(-0,8)
y = -0,8
x = 1,2
y = -0,8