Răspuns :
a) 3x+11=-10
3x=-11-10
3x=-21
x= -21 /3
x=-7
c) 5(x+3)=-20
5x+15=-20
5x=-15-20
5x=-35
x= -35 / 5
x= -7
3x=-11-10
3x=-21
x= -21 /3
x=-7
c) 5(x+3)=-20
5x+15=-20
5x=-15-20
5x=-35
x= -35 / 5
x= -7