1. x^2 +2x-3/x^-x-12=x-5

2.3x/x-2 + 2x^2/x^2+5x+6 =4/x+3

3.x-3/x+2>=-4 x minus three divided by x plus 2 is greater than or equall to negative four

4.x<=6/x -5 x is less t