prosze na jutro ;)
obwód- 35 cm.
bok a - x+ 7,5 cm.
bok b - x
4x + 15 = 35 / - 15
4x = 20
x = 5
odp. bok a ma 12, 5 cm, a bok b 5 cm :D
bo :
12,5 + 12,5+5+5 = 35 cm
na 1000 % dobrze :DDD
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obwód- 35 cm.
bok a - x+ 7,5 cm.
bok b - x
4x + 15 = 35 / - 15
4x = 20
x = 5
odp. bok a ma 12, 5 cm, a bok b 5 cm :D
bo :
12,5 + 12,5+5+5 = 35 cm
na 1000 % dobrze :DDD