k+k+5+k+3=35
3k+8=35
3k=35-8
3k=27
k=27:3
k=9.
1 bok ma 9 cm, drugi ma 9+5,czyli 14 cm, a trzeci 9+3,czyli 12 cm.
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k+k+5+k+3=35
3k+8=35
3k=35-8
3k=27
k=27:3
k=9.
1 bok ma 9 cm, drugi ma 9+5,czyli 14 cm, a trzeci 9+3,czyli 12 cm.