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x+2=-3
x=-5
b)0,25x+0,4=0,35 /*100
25x+40=35
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 /*100
x-100=10x-10
-9x=90 /÷(-9)
x=-10
0,1x=-0,3-0,2
0,1x=-0,5/0,1
x=5
b)0,25x+0,4=0,35
0,25x=0,35-0,4
0,25x=-0,05/0,25
x=-0,2
c)1-0,2x=-0,3x
0,1x=-1 /*10
x=-10
d)0,01x-1=0,1x-0,1
0,01x-0,1x=-0,1+1
-0,09x=0,9
x=-10