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-2x+4m=2m+4x+6
-2x-4x=2m+6-4m
-6x=-2m+6
6x=2m-6
3x=m-3
x=m/3-1
x<= -4
m/3-1 <= -4
m/3 <= -4+1
m/3 <= -3
m <= -9
Odp. dla m <= -9 pierwiastek x<=-4.