Răspuns:
a) 4(x+2)-3x=-17
4x+8-3x=-17
x+8=-17
x=-17-8
x=-25
b) 6(x+3)-4 = 2x-42
6x+18-4=2x-42
6x-2x=-42-18+4
4x=-56
x=-56:4
x=-14
c) 4x +1-3(x+2)=2(x-4)
4x+1-6x-6=2x-8
-2x+2x=-8-1+6
-3
a) 4x-10 <30
4x<30+10
4x<40
x<40:4
x<10
b)2(x+3)<x-5
2x+6<x-5
2x-x<-5-6
x<-11
c)4(x+3)<3x+7
4x+12<3x+7
4x-3x<7-12
x<-4
d)6(x-2)+x<5(x+4)
6x-12+x<5x+20
7x-5x<20+12
2x<32
x<32:2
x<16