3x-2y=9
5x + y = 2
y=2-5x
3x-2(2-5x)=9
3x-4+10x=9
13x-4=9
13x=9+4
13x=13 |:13
x=1
y=2-5·1
y=2-5
y=-3
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3x-2y=9
5x + y = 2
3x-2y=9
y=2-5x
3x-2(2-5x)=9
y=2-5x
3x-4+10x=9
y=2-5x
13x-4=9
y=2-5x
13x=9+4
y=2-5x
13x=13 |:13
y=2-5x
x=1
y=2-5·1
x=1
y=2-5
x=1
y=-3