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2009-12-17T20:13:04+01:00
3/5x + 1/2y = 2
1/2(2x-y) = 2

3/5x + 1/2y = 2 /10
x-1/2y=2

6x+ 5y= 20
x-0,5y=2/ x 10

6x+ 5y= 20
10x-5y=20

16x=40
x=2,5

6x+ 5y= 20
6 x 2,5 +5y=20
15+5y=20
5y=5
y=1

x+2 /5 - 2y = 5 /x 5
x - y+2/ 6 = 3 /x 6

x+2-10y=25
6x-y-2=18

x-10y=23
6x-y=20 /x -10

x-10y=23
-60x+10y= -200

-59x= - 177
x=3

x-10y=23
3-10y=23
-10y=20
y= -2
8 3 8