Odpowiedzi

2010-01-11T16:15:55+01:00
P = 1/2 r + 3
p +r = 18

p = 1/2 r + 3
1/2 r + 3 + r = 18

p = 1/2 r + 3
1,5 r + 3 = 18 /-3

p= 1/2 r +3
1,5 r = 15 /podzielić na 1,5

p = 1/2 r + 3
r = 10

p= 1/2 * 10 + 3
r = 10

p = 5 +3
r =10

p =8
r = 10