<span>1)x-3≤4x+2
4x-x≥-3-2
3x≥-5
x≥-5/3
x∈[-5/3;∞)
2)x-2<2x-3
2x-x>-2+3
x>1
x∈(1;∞)
3)x²-3x+1>1
x²-3x>0
x(x-3)>0
x=0 x=3</span>
5-ый..........................................................................
-7x-28=-3x-52
-7х + 3х = -52 + 28
-4х = -24
х = 6