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y-matka
układ równań:
4(x-2)=(y-2)
x+10+y+10=74
4x-8=y-2
x+y+20=74
y=4x-6
x+y=54
x+4x-6=54
5x=60
x=12
y=4x-6
x=12
y=42
dasz najj