Răspunsuri

2014-05-12T17:15:21+03:00
X-y=5         
y=2       
x-2=5       /+2
x=2+5
x=7
x+y=2+7=9   
1 5 1
2014-05-12T17:18:29+03:00
Daca y=2
 
x-2=5
x=5+2
x=7
.....................................................

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