9x^2+5=1怎么解

1/5x+9=1/2x怎么解? (3)/(x)+(5)/(2x-1)=(x+27)/2x^2-x怎么解啊! x*x+2*x+1=36,x怎么解, x-1+x-2+x-3+x-4+x-5+x-6+x-7=77怎么解速度! 8(3x-1)-9(5x-110-2(2x-70)=30怎么解? √5/3x^2-1+x^2+x/9=0怎么解? 1/(x+1)(x+2)+1/(x+3)(x+4)+1/(x+5)(x+6)+1/(x+7)(x+8)+1/(x+9)(x+10)怎么解 5x-9=x怎么解 9x=x+1怎么解 9x=x+1怎么解 9-2x=x怎么解 2x=5x怎么解 2x=5x怎么解? 1/5×(x-9)=0.5x-9怎么解 5X-2X=9分之2怎么解 X-5分之1X=9怎么解十万火急 9x乘1/5=48+x怎么解 x-2/5x=9 这方程怎么解