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0,6x+0,5y=2
0,5(2x-y)=2
0,5y=2-0,6x /*2
x-0,5y=2/*2
y=4-1,2x
2x-y=4
y=4-1,2x
2x-4-1,2x=4
y=4-1,2x
0,8x=8
y=4-1,2x
x=10
y=4-12
x=10
y=-8
x=10
{1/2(2x - y) = 2
{3/5x + 1/2y = 2
x-1/2y=2
1 3/5x=4
8/5x=4 /:8/5
x=2 1/2
x-1/2y=2
x=2 1/2
2 1/2-1/2y=2
x=2 1/2
-1/2y=2-2 1/2
x=2 1/2
-1/2y=-1/2 /:(-1/2)
x=2 1/2
y=1
x=2 1/2