Răspunsuri

2014-10-04T14:45:31+03:00
X+1*(-1)= 2+1*3x
x-1=2+3x
x-3x=2+1
-2x=3
x=3 supra -2
x=-1,5
2014-10-04T14:50:18+03:00
Il transform pe x in a ca sa  nu se confunde cu inmultitul.
(a+1)x1=(3a-1)+2+1
a+1=(3a-1)+3
a+1=3a+1+3
a+1=3a+4
3a-a=4-1
2a=3/:2
a=1,5