Ответы и объяснения

2013-10-08T10:31:53+00:00
1.  \left \{ {{3.6-2x>6} \atop {-2+3x>x}} \right.  =>  \left \{ {{2x<2.4} \atop {2x>2}} \right. =>  \left \{ {{x>1} \atop {x<1.2}} \right.      x=(1..1.2)

 \left \{ {{x \leq 36} \atop {x>6}} \right. x=(6..36]

 \left \{ {{4x<1} \atop {-4x<4}} \right. =>  \left \{ {{x<0.25} \atop {x>-1}} \right.  x=(-1..0.25)

4   0.7<x<2
x=(0.7...2)