x-wiek Basi
y-wiek Agnieszki
x-1=2y-1
x-5=y
x=y+5
y+5-1=2y-1
y+4=2y-1
y-2y=-1-4
-y=-5/:(-1)
y=5
x=5+5
x=10
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x-wiek Basi
y-wiek Agnieszki
x-1=2y-1
x-5=y
x-1=2y-1
x=y+5
y+5-1=2y-1
x=y+5
y+4=2y-1
x=y+5
y-2y=-1-4
x=y+5
-y=-5/:(-1)
x=y+5
y=5
x=5+5
y=5
x=10