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y- obecny wiek agi
x-1=2(y-1)
x=y+5
y+5-1=2y-2
y-2y=-2-5+1
-y=-6
y=6
x=y+5
x=6+5
x=11
odp. basia ma 11 a aga 6 latek.
y- agnieszka
układy równań z klamerkami! (ja ich tu nie dam)
x-1=2(y-1)
x=y+5
y+5-1=2y-2
y-2y=-2-5+1
-y=-6
y=6
x=y+5
x=6+5
x=11
Basia ma 11 a aga 6