7/8-2x=1/2 怎么解

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! 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 1/8x+16+(7/8x-16)*1/6-2=x-88怎么解 8(x-2)=2(x-7)怎么解 8(x-2)=2(x+7)怎么解呀, 7x-8=2x+27怎么解方程? x^2- 7X-8=0怎么解 X+18=（2X-18)×7/8 怎么解 8X-324=7*(X-2)怎么解? 7(x-1)=2x+2怎么解 10*[2-x]-9*[2-x]-8*[2-x]-7*[2-x]=56怎么解 3x-1/2-x ≥ 1+ 8x+7/x-2 怎么解?在线答~~~~ 2x-1=5x-7 方程怎么解 1/3X=2/7(x+20)怎么解? 方程 2/1x-7=5+x 怎么解 2x/5-3x/8=1怎么解 2+x/10+x/8=1怎么解,