Rozwiąz metodą podstawiania
6x-3y=9
x+5y= -9,5
x=-9,5-5y
6(-9,5-5y)-3y=9
-57-30y-3y=9
-33y=66
y=-2
x=-9.5-5*(-2)
x=-9,5+10
x=0,5
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6x-3y=9
x=-9,5-5y
6(-9,5-5y)-3y=9
x=-9,5-5y
-57-30y-3y=9
x=-9,5-5y
-33y=66
x=-9,5-5y
y=-2
x=-9.5-5*(-2)
y=-2
x=-9,5+10
y=-2
x=0,5