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-1x=3
b) 0.25-6 > 2x+4
-2x>9.75
2x-3x=7-4
-x=3/:(-1)
x=-3
-5,75(5i3/4)≥2x+4
-5,75-4≥2x
-9i3/4≥2x
x≤39/8
x≤4i7/8
2x-3x=4+7
-x=11/:(-1)
x=-11
b) ¼=0.25
2x>-0.25+6+4
2x>1.25/:2
x=0.625
poprawione podpunkt a)