x+(x+24)+(x+4)/2=7x快点了!急需急需!

x^2-4x+m=(x+3)(x-7),m=加上算式,急用,快 x-[x/4-(x/2+1)]=-1/4快! 3x方减4x=2x 快 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || (x^2-x 2)(x^2-x-7) 8快! x+x*2+x/3=200 求x快 (24-x)^2+(7+x)^2=25^2 快 2-2x-4/3=-x-7/6快 -7x+2=2x-4 怎么解 快 解方程4x²+2=7x,快 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 化简,再求值:2(X-8)(X+5)-(2X-1)(X=2),其中X=-7 化简:(-4X+1)(2X+3)-(-8X)(X+1)快(X=2)是(X+2) 打错了 解九宫格题目（X为未知数）9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 计算[(x-1)/(x-2)-(x-2)(x-3)-(x-3)/(x-4)+(x-4)(x-5)]/(2x-7)快 2x+3x+4x+5x+x+6x+7x=100 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 计算：(x-2分之x-2+x分之x)÷2-x分之4x 快, 对任意整数a.b,规定a*b=2xa+b,如果x*2X*3x*4x*5x*6x*7x*8x*9x=3039,求整数x.快