z- wiek ździcha
c- wiek czarka
{3c=z
{4+z=2(4+c)
{3c-z=0
{4+z=8+2c
{-2c+z=4
c=4
{c=4
{z=12
Odp. ździchu ma 12 lat.
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z- wiek ździcha
c- wiek czarka
{3c=z
{4+z=2(4+c)
{3c-z=0
{4+z=8+2c
{3c-z=0
{-2c+z=4
c=4
{c=4
{z=12
Odp. ździchu ma 12 lat.