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1x=-5
b) 0,25x=-0,05
x=-0,2
c) 0,1x=-1
x=-10
d) -0,09x=0,9
x=-10
0,1x=-0,5 /*10
x=-5
B 0,25x+0,4=0,35
0,25x=-0,05 /*100
25x=-5 /:25
x=-0,2
C 1-0,2x=-0,3x
0,1x=-1 /*10
x=-10
D 0,01x - 1 = 0,1x-0,1
-0,09x=0,9 /*(-100)
9x=-90 /:9
x=-10