Odpowiedzi

2009-12-02T14:43:24+01:00
X/3 + y/3 = 1 1/3 / *3
x/3 - y/2 = 2 1/3 / *6
x + y = 4
2x - 3y = 14
x = 4 - y
2(4 - y - 3y) = 14
x = 4 - y
8 - 2y - 6y = 14
x = 4 - y
-8y = 4
y = - 1/2
x = 4 - (-1/2) = 4 1/2


2009-12-02T14:52:38+01:00
X/3+y/3=11/3:3
x/3-y/2=2 1/3

x+y=4
2x/6-2y/6=14/6:6

x=4-y
2x-3y=14

2(4-y)-3y=14
8-2y-3y=14
-5y=14-8
y=-1 1/5
x=4+1 1/5
x=5 1/5