Odpowiedzi

2010-04-08T10:26:28+02:00
3x - 2y : 5 + 5x - 3y : 3 = 4 1/3 |*15
2x - 3y : 3 + 4x - 3y : 2 = 5/6 |*6

45x-6y+75x-15y=65
12x-6y+24x-9y=5

120x-21y=65
36x-15y=5

120x=65+21y |:120
36x-15y=5

x=65/120+21y/120
36*(65/120+21y/120)-15y=5

x=65/120+21y/120
19,5+6,3y-15y=5

x=65/120+21y/120
-8,7y=5-19,5

x=65/120+21y/120
-8,7y=-14,5 |:(-8,7)

x=65/120+21y/120
y=14,5/8,7

x=65/120+35/120
y=14,5/8,7

x=100/120
y=1 5,8/8,7

x=5/6
y=1 58/87