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-3x+y=10
3x+2y=2
y=10+3x
3x+20+6x=2
y=10+3x
9x=-18
y=10+3x
x=-2
y=4
3x=12 /:3
x=4
3x+2y=2
3*4+2y=2
2y=2-12
2y=-10
y= -5
x= 4
+{-3x+y=10
3y=12/:3
y=4
{y=4
{3x+2y=2
{y=4
{3x+2 x 4 = 2
{y=4
{3x+8=2
{y=4
{3x=2-8
{y=4
{3x=-6/:3
{y=4
{x=-2
Proszę to jest chyba podstawiania jak dobrze pamiętam ;)