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2*x+2*(x+150)=1500
2x+2x+300
4x=1500-300
4x=1200
x=300
odp.: jeden bok ma 300dm, a drugi 450 dm
I bok=x
II bok=x+150dm czyli 15m
obw=2x I bok + 2x II bok
150m=2x+2x+2*15m
150m=4x+30
4x=120
x=30
I bok=x czyli 30m
II bok=x+15m czyli 30m+15m=45m
odp: 1 bok ma 30m (300dm) a drugi 45m (450dm).