Odpowiedzi

2010-04-10T17:57:09+02:00
5x - 20 +6y= 12-x
x/2 - 2y = 2,5 - 3

6x = = 32 - 6y // 6
x = 32/6 - y

1/2 (32/6 - y) - 2y= -0,5
32/12 - 1/2y -2y = -0,5
- 2,5y = 32/12 - 6/12
-2,5y = 26/12 // -2,5
y = - 52/ 60 = - 13/15

x = 32/6 + 52/60
x = 372/60