Răspuns:
1) a)-4x=8
x=8/-4
x=-2
b)-3x+1=10
-3x=10-1
-3x=9
x=9/-3
x=-3
2) a)-7x-8=3x+12
-7x-3x=12+8
-10x=20
x=20/-10
x=-2
b)3(2x-4)-(x-3)=x-1
6x-12-x-3=x-1
5x-9=x-1
5x-x=-1+9
4x=8
x=8/4
x=2
c)-3x+4=2x-1
-3x-2x=-1-4
-5x=-5
x=-5/-5
x=1
d)-(2x+3)=1-4(2x-8)
-2x+3=1-8x+32
-2x+3=33-8x
-2x-8x=33-3
-10x=30
x=30/-10
x=-3
e)-2(x+1)=-2x-2
-2x-2=-2x-2
-2x+2x=-2+2
0=0
f)-2(x+1)=-2x+2
-2x-2=-2x+2
-2x+2x=2+2
0=4
Sper sa-ti fie de folos!