1.5x/x+1-x/x+6=4.5x(x+6)-x(x+1)=4(x+1)(x+6);5x²+30x-x²-x=4x²+28x+24;x=24;2.x²+1/x+2x/x²+1=3(x²+1)(x²+1)+2x²=3x(x²+1);(x²+1)²-3x(x²+1)+2x...