Răspuns :
a.3x= -10-2
3x= -12
x= -4
b.4x+1= - 11
4x= -11-1
4x=-12
x= -3
c. 5x+15=-5
5x=-20
x=-4
d. - 5x+12=-13
-5x=-25
-x=-5
x=5
3x= -12
x= -4
b.4x+1= - 11
4x= -11-1
4x=-12
x= -3
c. 5x+15=-5
5x=-20
x=-4
d. - 5x+12=-13
-5x=-25
-x=-5
x=5