Ix+5I=Ix-4I
1) x+5=x-4
x-x=-4-5
0≠-9
2) x+5= -x+4
x+x=4-5
2x= -1
x= -0,5
Ответ: x= -0,5
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Ix+5I=Ix-4I
1) x+5=x-4
x-x=-4-5
0≠-9
2) x+5= -x+4
x+x=4-5
2x= -1
x= -0,5
Ответ: x= -0,5
1)x+5≥;x≥-5
x-4≥0;x≥4
x+5=x-4
5≠-4
x€∅
2)x+5=-(x-4)
x+5=-x+4
2x=-1
x=-1/2