układ równań 2(3x-2y)-3(x+2y)=-11 -3(x-y)-(x+y)=2
2(3x-2y)-3(x+2y)=-11 -3(x-y)-(x+y)=2
6x-4y-3x-6y=-11
-3x+3y-x-y = 2
3x-10y=-11
-4x+2y=2 /*5
-20x+10y=10
----------------------
-17x = -1 /:(-17)
x = 1/17
3/17-10y=-11
-10y = -11-3/17 /:(-10
y = 190/17 * 1/10
y = 19/17 = 1 2/17
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2(3x-2y)-3(x+2y)=-11 -3(x-y)-(x+y)=2
6x-4y-3x-6y=-11
-3x+3y-x-y = 2
3x-10y=-11
-4x+2y=2 /*5
3x-10y=-11
-20x+10y=10
----------------------
-17x = -1 /:(-17)
x = 1/17
3x-10y=-11
3/17-10y=-11
-10y = -11-3/17 /:(-10
y = 190/17 * 1/10
y = 19/17 = 1 2/17