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x=Y+3
z=2y-2
obw=17cm
obw=½a×h
17=½Z×H
dalej nie wiem moze to ci chocziaz pomoze coos
y długosc 2 boku
z długosc 3 boku
x=y+3cm
z=2y-2cm
Ob=17cm=x+y+z
y=x-3cm
Zatem:
z=2y-2cm
z=2(x-3cm)-2cm
z=2x-8cm
Ob=17cm=x+y+z
17cm=x+x-3cm+2x-8cm
17cm=4x-11cm
4x=28cm
x=7cm
y=x-3cm
y=7cm-3cm=4cm
z=2x-8cm
z=14cm-8cm=6cm