0,2x + 0,5y = 0,4 x + y =12 ile wynosi y a ile x
0,2x+0,5y=0,4
x+y=12
2x+5y=4
-2x-2y=-24
-------------------+
3y=-20
y=-6²/₃
{x=18²/₃
{y=-6²/₃
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0,2x+0,5y=0,4
x+y=12
2x+5y=4
-2x-2y=-24
-------------------+
3y=-20
y=-6²/₃
{x=18²/₃
{y=-6²/₃