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0,1x=-0,3-0,2
0,1x=-0,5 I :0,1
x=-5
b)0,25x+0,4=0,35
0,25x=0,35-0,40
0,25x=-0,05 I:0,25
x=- 0,2
c)10=4-2x
2x=-10+4
2x=-6 I:2
x =-3
d)-[2x-1]=4
-2x+1=4
-2x=4-1
-2x=3 I: -2
x= - 1,5
e)2t-[3t+1]=6
6t-2t=6
4t= 6 I : 4
t =1,5
g)-[4+x]=2[3-x]
-4x-x=6-2x
-5x+2x=6
-3x=6 I : -3
x=2
h) 3[y+6]-y=2[y+9]
3y+18-y=2y+18
3y-y-2y=18-18
0=0
i)[x-7]-2[3x+5]=3
x-7-6x-10=3
x-6x=3+7+10
-5x=20 I : -5
x=-4