Odpowiedzi

2010-02-22T21:08:49+01:00
9=0,3*(2x+18)
9=0,6x+5,4
3,6=0,6x
x=6

bok a=9 b=9 c=6 d=6
2010-02-22T21:11:26+01:00
3/10 = 9
10/10 = 30
a = 9cm
b = 6cm
c = 9cm
d = 6cm