Odpowiedzi

2009-05-06T15:45:50+02:00
Ukł równań:

2a+2b = 16
6a = 5b

wiec:
2a=5/3b
5/3b+2b = 16

2a=5/3b
11/3b = 16

b = 48/11 => b = 4 i 4/11
2a = 5/3b => 2a=80/11 => a=40/11 => a= 3 i 7/11

2009-05-06T15:48:03+02:00
2a+2b = 16
6a = 5b


b = 4 4/11
a= 3 7/11