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y - ulgowy
3x + 2y = 34
x-3y=23
3x+2y=34
x=23-3y
3(23-3y)+2y=34
x=23-3y
69-9y+2y=34
x=23-3y
-7y=-35 / (-7)
x=23-3y
y=5
x= 23-15
y=5
x=8
chyba to ;d