Răspunsuri

2014-04-02T17:18:34+03:00
A)3a+1=0=> a=-1/3
b)3-a=0=>a=3
2014-04-02T17:18:59+03:00
A)ecuatia ax+a+1=0 are solutia x=2
2a+a+1=0
3a=-1
a=-1/3

b)ecuatia 3x-a+2=0 are solutia x=1supra 3

3*1/3-a+2=0
3/3-a+2=0
1-a+2=0
3-a=0
-a=-3 /*-1
a=3
1 5 1