rozwiaz uklad ruwanan
x-y=5
x+2y=-1
daj naj
x-y=5 //*2x+2y=-1
2x - 2y = 10
x + 2y = -1
3x = 9 //:3
x = 3
3-y = 5
-y = 2 //:(-1)
y = -2
x-y=5x+2y=-1 /*(-1)x+y=5-x-2y=1+_________ -y=6 /:(-1) y=-6x-y=5 /*2x+2y=-12x-2y=10x+2y=-1+__________ 3x=9 /:3 x=3
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x-y=5 //*2
x+2y=-1
2x - 2y = 10
x + 2y = -1
3x = 9 //:3
x = 3
3-y = 5
-y = 2 //:(-1)
y = -2
x-y=5
x+2y=-1 /*(-1)
x+y=5
-x-2y=1
+
_________
-y=6 /:(-1)
y=-6
x-y=5 /*2
x+2y=-1
2x-2y=10
x+2y=-1
+
__________
3x=9 /:3
x=3