7.
8=3x-2
3x=10
x=10/3
8.
x=1-2y i podstawiasz:
2(1-2y)-y=-3
2-4y-y=-3
-5y=-5
x=1-2=-1
y=1
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7.
8=3x-2
3x=10
x=10/3
8.
x=1-2y i podstawiasz:
2(1-2y)-y=-3
2-4y-y=-3
-5y=-5
x=1-2=-1
y=1